if those are your only choices then i would have to go with the wolverine, just because i prefer marzocchi over rock shocks. that being said i noticed both bikes have a mrsp in the 750ish range. if thats your budget go look a your LBS. you will end up finding a bike with much better components on it than either of those bikes.

the trek 6000 series http://www.trekbikes.com/us/en/bikes...6_series/6000/
something from bikes direct with some nice components. http://www.bikesdirect.com/products/...om_trail08.htm