I like the Redhead vests with the self supporting seats. You can adjust the side straps on the fly to help level you out on hilly terrain and pretty much anywhere you set up on a bird. The seat flops down quick and also locks back into place with a magnet when you decide to move around. It's got other straps that adjust to your height and fat belly circumference too. I adjust mine then cut the straps and burn the edges to get the slack outta the way. I've gone through two of them in the last 10 years and won't buy anything but this type. The last one I bought is made of a lot higher quality material than the last so it should last another 5 years or until they make a better one. They're very affordable too. Just my 2 cents.