Overall experience with Jmall.co.uk was good. They didn't have my chair so upgraded me free of charge and sent it out within the day. 3 days later I received the product. Took me about 30 mins to assemble and the instructions were easy and simple. Build quality is good for the money you pay.
I decided to go to an office chair. Comfy with a good articulation of the backrest. Gaming chairs are like racecar seats so expect that. You're sitting in an office or at a pc for hours at a time, not smashing it round bends at 85mph. You do need a light chair that hugs you. Definitely recommend the office chairs.