My stock grips were tearing me up even with gloves, so I bought some used Rogues.
I had some trouble with the install (don't laugh - I just needed a couple more rings).
I wanted to go ride so, inspired by this thread I bought these at a local bike shop to try out:
http://www.ravx.com/2008_product/pages_products_08/grips_08/comfy_x.html
They are fantastic!! They aren't lockons so I Gorilla glued them, but there is a 100% improvement on hand fatigue and blister burn. I'm definitely sold on ergo grips.
One more thing, I know this is weird but I tried them all different ways before installing them and liked the way the felt better when they are rotated 180* - the skinnier side is nearest the throttle, and the grey part facing the nose, and makes kind of a wedge that gives you more leverage than reaching over more rounded side of the grip. They really feel perfect.