The tendency toward touch support will vary depending on the specific kind of laptop you're looking at. Let's examine the major types.

BUDGET CLAMSHELLS. Most low-cost machines that are straight-up laptops (that is, models that do not have 2-in-1-type hinges or tablet modes) will not have touch screens, but you'll run across the occasional exception. In under-$500 machines, a touch screen should be seen as a pleasant surprise, not a given. Exception: 2-in-1s, more about which in a moment. (For more, see our picks for the best budget laptops.)

MAINSTREAM AND BUSINESS CLAMSHELLS. You'll see the most varied mix of touch and non-touch models here. This is the category most likely to be fraught with touch versus non-touch models in the same system family. You may be able to specify one or the other type of screen at the time of purchase, or different configurations in the same line may feature different screen types. Look for this, especially in product lines like Lenovo's ThinkPad or Dell's Premium laptops. (For more, see our picks for the best business laptops.)

2-IN-1 CONVERTIBLES AND DETACHABLES. By their very nature, all 2-in-1 machines will have touch screens. When you're using a 360-degree rotating 2-in-1 in tent or tablet mode, you don't have access to the keyboard, so touch input is essential in those modes. Likewise, in a detachable 2-in-1: Remove the keyboard, and all you're left with for input is your tapping fingers or a stylus. Indeed, a key differentiator here is whether the 2-in-1 additionally supports stylus input, and if so, whether the stylus is included or costs extra. A high-profile example of the latter is the Microsoft Surface device family, which mandates $100 or more for a complementing Surface Pen stylus. (For more, see our picks for the best convertible laptops.)

GAMING LAPTOPS. Most gaming laptops have 14-inch, 16-inch, or 18-inch screens, and very few of these offer touch input. PC gamers don't have much use for touch input (PC games aren't written to support it), and implementing a touch screen would put even greater strain on an already-challenged battery. (For more, see our picks for the best gaming laptops.)

BIG-SCREEN MACHINES. It's uncommon to see a laptop with a 17- or 18-inch display that supports touch input, but they are out there (though 16-inch models are starting to replace 17-inch systems). Touch-panel implementations at that size are pricey and simply not cost-effective. They're also not practical: Many touch-screen laptops are 2-in-1s, and a 16-inch (or bigger) tablet can be mighty unwieldy. But 16-inch creative professional laptops, like the Asus ProArt P16 (H7606), support touch. (See our favorite 17-inch and 18-inch laptops.)

CHROMEBOOKS. Touch screens did not feature in early Chromebook models, but we're seeing them in more and more new ones. With the emergence of 2-in-1 convertible Chromebooks (most are 360-degree-rotating designs, though a few feature detachable displays), touch is becoming more common in this class, especially as support for Android apps has become the norm on these machines. (For more, see our picks for the best Chromebooks.)

APPLE MACBOOKS. Sorry! No Mac desktop or MacBook laptop supports touch-screen input unless you count the thin Touch Bar touch strip above the keyboard on a few now-discontinued MacBook Pro models. (The Touch Bar is merely a contextual shortcut strip that adapts to the program at hand.) The macOS operating system isn't optimized for touch. In the Apple sphere, full-touch displays are reserved for the company's iPhones and iPads.

There's no single answer to that question, as the "best" machine for you depends on your specific needs and budget. That said, Asus, Dell, HP, and Lenovo, among other PC OEMs, have touch-screen models, but sometimes touch-screen panels and non-touch ones are offered in different configurations of the same machine, in the same family. Make sure you know what you're getting (or not getting) when you buy. Also, as mentioned, Apple is the one brand not to expect a touch screen from; all of its MacBooks use non-touch panels.

You might think it's a given that having a touch screen is a good thing if you can get one. But you'll want to consider a few factors before making the purchase.

CONSIDER BATTERY DRAIN. All else being equal, a touch screen will reduce your battery life versus an identical non-touch screen in the same system. That's because the system has to keep a trickle of power fed to the digitizing layer, which will always be on, waiting for your fingertip or stylus tip to tap. That said, we emphasize "all else being equal": The battery factor is seldom an apples-to-apples comparison, because touch screens in a given laptop line that also offers non-touch options also tend to be higher-end, higher-resolution, or higher-brightness screens that, by their nature, consume more power to start with—the touch aspect regardless.

WILL YOU ACTUALLY USE IT? Think about how you work or play, day to day, before insisting on a touch panel. If your main PC activity is mincing through fine-celled spreadsheets, jabbing a touch screen with a finger might not afford the precision or utility you need for operations. If you spend most of your time tapping through YouTube videos, on the other hand, touch can be a delight.

Also, consider the ergonomic aspects. To use a touch panel much, you'll be reaching from keyboard to screen, which can clash with your workflow on a clamshell machine. So make sure that kind of reaching jibes with your day-to-day usage. Alternately, if you'll often be tapping at music- and movie-playback controls on the screen or poking frenetically at YouTube thumbnails, consider a 2-in-1 that you can prop up in A-frame or tent mode, in which tapping the screen makes more sense and requires less reaching.

ARE YOU GOOD WITH GLOSSY? Most touch screens have a glossy finish that extends across both the screen and its bezels (the borders surrounding the screen). Matte-finish touch screens are uncommon. The seamless bezel coverage allows for side-in swipes and prevents interruption of your tap and swipe activity near the screen's periphery. That's fine if you like glossy screens, and they can enhance the perceived vividness of the panel. But know that screens of this kind are more prone to smudging, and they tend to be afflicted by glare outdoors or under harsh indoor lighting more than matte panels are. Keep a lens cleaning cloth handy.

THICKNESS AND WEIGHT. Implementing a touch layer on the screen's face means a bit of additional material and circuitry. It's minimal, but know that a touch versus a non-touch laptop will levy a slight penalty on both fronts—again, all things being equal.