I'll second the comfort issue and add looks! I had the regular seats Cessna had originally in Mary Lou. Yeah, they were worn and the foam rubber was permanently compressed. My rear was sore and the rest of me was stiff after only an hour or son. A seat workover from TnWings was the prescription! New foam and the leather covering, and lemme tell ya, it's great. I can fly hou a bunch of hours in a day, and no issues getting out and moving around because of stiffness or comfort issues. I love 'em.
Had 'em since 2007, and they're still looking new. IMHO, it's the only way to go.