I was looking at thrones, and when I was in Florida visiting my friend Ed (a member here), I tried it out and it was very comfy to use. I could see it being good for longer periods of time for people that sit for more than 1-2 hours at a time. They are awesome, but not cheap... around $325US.
About 3 months ago, one of the higher managers where I work ordered a replacement chair for himself, one of those $3500 chairs that are simply way overpriced, and I asked him what he would do with his old chair, and he said that it would be tossed out.
I asked if I could have it, and he agreed. Its one of those higher ones with a contoured based with 3 memory foam base, hydraulic height adjustment and a height adjustable chrome ring at the bottom for the feet... for the cost of bringing it home, it was mine. I tested it out, then removed the back rest portion and blacked out the chrome base, and that is what I use now. Its nothing special, but it is height adjustable, has a nice thick pad to sit on, and is a full width chair, perfect for my needs, and the cost was right. The best part, its very comfy and perfect for use in my future videos as well.