no point in spending 600$ for a gaming chair not unless you have money to burn.
Staples Hyken Technical Mesh Task Chair, Black | StaplesŪ
this is what i use and just bought my second one, first one lasted me 3 years, im 190lbs and it supports me with no leg cramps/numbness what so ever. with the mesh back and seat it feels nice becuase of air circulation keeps me cool and in the winter time i have a portable heater blasting behind me to keep me toasty. my gaming sessions on avg is about 3 hours with no complaints. i do have a custom foot stool(made it out of wood covered in carpet) raised and angled to give me extra support.
my buddy has the Dx racers seat and it is very good/supportive but im too cheap and can be pleased easier.