I will add that with the GRIP2 (or at least the one I am currently running with the Luftkappe), the adjustability is incredible. You can easily feel the difference with even one or two clicks of any of the adjustments. Tuning it on the trail is quick and dead simple, and you can button fiddle to your heart's content, if that's your jam. I have had a blast with the GRIP2 + Luftkappe setup.
I should add that I am 185 pounds plus gear. I suspect that I am smack dab in the sweet spot for Fox's standard tune. Not sure how much benefit I would gain with a Fractive or other custom tune. For my weight, riding style and terrain, Fox almost nailed it (the Luftkappe perfected things). I can't relate at all to all the hate at this forum for all things Fox. I have owned over 25 bikes, with all sorts of forks. I currently have 2 Manitous in the stable.
For me, Fox. All day long.