[racer]

Lots of folks like Recaro Pole Position, Sparco Evo is another favorite. Do you want/need a "containment" seat? are you wearing a HANS type device?

Also check the sanctioning body you will run with about THIER rules for allowable seats -ie, must they be FIA compliant? If not, must you run a back brace? (and is there room for one depending on your size?) etc. etc.