Follow anyone on insta who mainly posts about decor (then more will be suggested). Most of them link to Amazon and have a post about ‘how I achieve super fluffy bedding’. It’s usually a select set of Amazon inserts/quilt, and often stuffing 2 in one duvet cover. More on reddit.com

I've had Brooklinen linens and a Buffy duvet insert for the last 4 years. The sheets are very soft and comfortable but the fitted sheets have gotten small tears. I like the Buffy, I think it sleeps well year-round.

We recently upgraded to a King and got the whole bed bundle from Parachute. The duvet is a little fluffier than the Buffy and the pillows are amazing. The sheets feel like a step up from Brooklinen but they haven't seen as much wear so it's tough to say.

Re: putting a duvet until the insert, have you tried the magic burrito method? It's a game changer!

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Silk insert with linen duvet cover.

I use Mommesilk 2kg insert comforter, Quince European linen duvet cover.

Silk comforters are relatively heavy and drape like a weighed blanket.

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The problem is that about 99% of comforters are polyester-filled (or plastic-based if you want to get technical about it). Comforters and Duvet Inserts are close cousins (and sometimes are the same thing, ngl) so it becomes confusing for many people when they search for comforters and find that an insert is basically labeled as a comforter. Sometimes the 'comforters' will have ties/loops on the ends to help attach it inside of the duvet, and other times it won't. It is pretty frustrating for many people that are looking specifically for just duvet inserts or just comforters (with fill material inside of them). I just basically have taken to calling anything with fill that has no loops/ties a comforter since that's what the majority of them are. It's just the norm: Comforters with a color/pattern on them (that's not just white) tend to be poly-fill 9 times out of 10. Poly-fill, unfortunately, really, really sucks at temp regulation. It usually traps heat, is horrible to dry (plastic doesn't do well expelling water or with high heat b/c it will melt), and will clump over time inside the comforter (especially if you wash it) and then you'll be left with a lumpy mass. I had a comforter from Chic Home that was polyfill and microfiber for years and had no clue what I was getting into with it until I had it for a few months and the deed had been done, so to speak. Ok; here's a question that will make or break this whole dilemma of yours: Do you want your comforter to have a pattern on it (like a detailed colored pattern/image) or do you want just a white comforter (like most inserts look like)? Are you OK with a comforter that is just solid colors (or 2-toned, at the most)? That, more than anything, will determine what direction we can proceed in, because if you want a patterned comforter then the chances of you finding one without poly-fill that will overheat you at night will be very, very slim :( Let me know and I'll do my best to help you find something that will work for you depending on the circumstances. More on reddit.com