Which new office chair should I buy?

RageSaul

Honorable
Feb 3, 2013
208
0
10,680
Hi, I've been looking around for new office chairs as I have a terrible posture and my current chair is awful and pretty dirty.
Alors I've come across 2 that really seem good:

http://www.amazon.co.uk/gp/product/B00IYQ3DLA/ref=s9_hps_bw_g201_i1
and

http://www.amazon.co.uk/Teknik-Cobham-Luxury-Executive-Office/dp/B00389O6U0/ref=sr_1_22?s=kitchen&ie=UTF8&qid=1448745501&sr=1-22

Both of these look really nice and have adjustable arm rests and comfy looking seats. I'm not sure which would I would be better off going for though.
If you can find a better one around the same price range (under £200) that'd be cool too.
Thanks.