I have a Helinox- its not as good as the big boy 300# rated chair I bought on Amazon for 1/2 the price
I bought the Marchway for two of my boys. Definitely not a backpacking chair but they bring them to camp and sit comfortably. One of them suckers is about 280 lbs and chair holds up. Real quick to deploy, not that the others are that bad but quicker is quicker.
Flexlite air is 20 bucks more and 11oz lighterREI flexlight chair.
Basically a REI version of a few of the chairs listed. 1lb 11 oz, packs up small, and uses a bungee type system and comes together/breaks down quickly. Nearly half the price of the others.