So far I've noticed that the VPP system pedals really well, just a little better than my 575. I love my Yeti, but I can tell the pedalling difference in my legs after consecutive days of riding. The only problem is trying to find the sweet spot on the DHX air :madman:. Probably will be switchin to a RC4 as soon as I find a deal on one. Bike setup 08 Nomad w/ lyrik coil 160 uturn (love it) with the DHX air 5.0 10 speed XT shifters/derailures 24/36 chainrings with Stans Flow/Hope pro 2 hub in rear and DT 340/ex up front. Any thoughts on the DHX air or are they just hopeless and just get a RC4. Thanks Santa Cruz did a great job with this bike.