My DD rifle came with a Magpul MOE pistol grip. Not bad, but I found it to be somewhat thin for my hand. I also like a rubberized grip (I had an ERGO on my old Bushmaster). So I installed a FAB Defense AGR43 and I think it is going work great, It is thicker, has a rubberized texture that ensures a good grip, will work well when hot or with gloves. I especially like the backstrap, it allows for a higher more positive grip. Her is a picture of the grip:
FAB Defense AGR 43 grip for AR review-agr43-3.jpg

Price wise, it is in the mid-$30.00 range, which is competitive. Made in Israel. Recommended.