What kind of Chair should I buy?

So I have right now using a chair with rollers on them and seems like it makes my back a lot more worser everyday because i'm sitting down with my back slightly slanted for numerous hours over 8-10hours a day without any breaks for my gaming and homework habit. Any recommendation on my new chair i'll be purchasing this month that can be comfortable and have my back straight when sat at the same time.

 

Mabye a chair that reclines so that your back is stretched?

By the way, Worser isnt a word....Its worse.

 

Reclining and a nice soft leather and/or a massage thing with a heat pad that covers the chair might help. Good luck!