REI flexlite or Helinox zero. More on reddit.com

Wow, I'm glad you asked this question. This is something I've put a lot of thought into. Several possible solutions/ideas below: Made by a reputable company, but no idea how comfortable it actually is. I see these for sale locally all the time for like $5 to $25. https://www.kimball.com/furniture/seating/flip/ The base of an office chair is held on by a single clip. This clip can be pryed off with a flat head screwdriver and about 15 seconds of your time. This would prob make transporting a chair much easier, as the base is always the widest part of the chair. https://youtu.be/imwlLdta3r8 For lightweight, easy to carry, perhaps consider something like a Herman Miller Setu or Humanscale Liberty or World or Knoll ReGeneration? All of these are pretty much the lightest and yet ergonomic-feature-packed office chairs. Sitting slightly below these chairs in terms of ergonomic adjustability would be "multipurpose" chairs such as the Herman Miller Caper or Steelcase Cobi, which are even lighter. Again, if you get one of these chairs I listed above, you can pop the base on/off with a flathead screwdriver and 15 seconds. Plus, these chairs are on the lighter side--especially the Caper and Cobi. More on reddit.com

Honestly my sister gifted me a wind pouch and I love it. Just me (6-3 and 180) laying it is the most comfortable thing. It sits a little low, but if laying down it’s super comfortable. When my g.f. Sits with me in it, we can both sit and be comfy. More on reddit.com

Most of these cheap folding camp chairs are identical, and it doesn't really matter which one you get. That said, if you're a taller person, they're fairly small and prone to being uncomfortable on your back due to how short the back of the chair is; I'm about 6 foot and they end well below my shoulder blades. Tusk makes a larger one that comes up much higher in the back and, at least for me, is way more comfortable. That said, I almost never bring it; just not worth the weight/bulk. Usually a campground will have picnic tables, a convenient tree to lean against, or something. If not, I don't really mind sitting on the ground. More on reddit.com