This is the best seat I have used. I have an older model on my older X Factor and it has great back support. The new model even has better bottom padding. Andy (Iceman) has said he recommends this seat, in the past. If you look at the picture, I think it even comes with a bottle of beer. Hopefully some Ballast Point, Ha Ha.
http://www.kayakfishingsupplies.com/...ic-angler-seat