I bought a new Epic 18X in November and as much as I like it I just couldn't make the OEM seat comfortable.
After many hours of research, and reading many reviews I contacted Joe Greenly at Redfish Kayak. I gave him the kayak info that he needed and within a week the seat was delivered.
After taking the OEM seat out, I weighed both seats and the Redfish seat weighed 3 lbs less. The first run I went 2 hours, and the next day I put in a very taxing 3 hour run. I just cannot believe how comfortable this seat is, and support it offers!
Joe, you really should get in the motorcycle seat business as I would gladly have you make me a couple of them.