I've been paddling a kevlar Tempest 170 since last June, and absolutely love it. It fits like a glove, is responsive to leans, perfect for layback rolls, and does everything I ask it. Plenty of room for gear, also. To date, I've not had any problems with water in the hatches while practicing rolls. (And, I have to practice a LOT...)
I had paddled a number of kayaks in a demo day in Spring '07, and knew the Tempest 170 was "my" kayak after just 10 minutes. Love the outfitting, the feel, everything. I'll be paddling that boat for years to come.