foamies from Shinhopples. Low price, work great. Buy about 3 -4 pair every three/four years. I'll put them on in Apr/May after the cold goes away then take them off in Oct so the heated grips work better. Although Jeff (ZZ) punched holes in his so the heated grips work better with them on.
I really like the OEM skinny grips. I have the grip puppies on another bike and really like them but they are larger and I prefer the small diameter. They do wear out fast but are inexpensive and easy to replace. Had the Kuryakyn ISO grips on another bike long ago and really disliked them, they get sticky after a while and I grew to hate touching the nasty rubber. Plus you see them on so many bikes they are common as dirt.