I am looking for a nice desk chair for home. The one I have now sucks and I spend too much time in it to be using a crappy chair. I want something comfortable, with good back support. Anyone have any recommendations? I am willing to go up to 300-350 bucks for it, but wouldn't mind seeing other more expensive ones if you highly recommend them.

Not a deal breaker, but I prefer no arms (or arms that can be dropped/pushed out of the way/removed), as I also use this chair when playing guitar, and chair arms tend to get in the way.