Not that this is gonna help but my friend got this funky looking chair that sort of looks like a bar stool but the seat is almost mushroom shaped and padded. When you sit on it the thing sort of bounces up and down a bit and rolls around slightly like an adult version of those spring horses they have at playgrounds. The point of it is that it forces you to center your body on it in order for you to sit comfortably on it. With most chairs you can slouch or curl and sit however makes you feel comfortable at the moment but prolonged sitting like that will eventually be bad for your spine. This chair makes you sit correctly or you'll fall over, but it still maintains comfort. I think it cost an arm and a leg and I have no idea what it's called or who makes it, but it's really cool. He's a CEO of his own computer consulting firm, so he spends hours in front of his computer and he says it's the best chair he's ever had.