I put one on my nova and am very happy with it. You will not believe how hard your stock pad is when you feel it side by side the comfortech. I was lucky and got mine off ebay for $30, so it was absolutely worth it. Plus I mainly waterfowl hunt with my 12ga nova ( have a nova 20 for everything else). I've heard they are going for 70 to 80 bucks at a lot of shops, dont know why they are so high.
On one of my last hunts last year I switched guns with a buddy. Mine was a Camo 28 inch nova with recoil reducer, extended choke tube, and Comfortech pad. His was a stock black 26 inch with no recoil reducer. It was like night and day. Biggest difference beside the kick was getting off a second shot. My gun recoverd 10 times faster.
If you are doing any serious shooting I recomend all the mods I have done. I never take out the recoil reducer anymore, even if target shooting. Still want to polish the forcing cones then I'll be done.
The nova is a great pump gun out of the box, but with a little work it can be the best.