I need a new office chair. Any recommendations?

ergonomic, with adjustable height and adjustable lumbar support. Your back will thank you.

@iAmNaN yeah sounds good but do you have a brand or model in mind?

Something like this? Hehe

(Obutto Revolution)

Got myself a dx racer few months back. Expensive chairs, but worth it. My back doesn't hurt anymore ;) other brands are AK Racing and Noble.

Standing desk instead?

If you have an Ikea near you, go try and sit on the 'Markus'. Currently sitting on it and it's a pretty nice chair!

@telegraham mine is an Aeron manufactured by Herman Miller. A bit on the pricey side, though.

In the same line of thought as @gummy, I own a Millberget (or similar, in their site it looks smaller than the one I have so I'm not 100% sure) and it's super confortable, considering I spend pretty much the whole day sitting after coming home from uni classes