Looking for a bike that will XC and be an All mountain trailbike b/c I live in the Northeast where it is rocky and rooty, lots of short/steep climbs. I like faster bikes...that is why I was looking for comparisons of the Flux, 5 Spot, and 5.5. I can't decide so had an idea...can I build a Flux with a Talas Fork and a Coil Shock and have the best of both worlds (XC and All mountain)? If so, which rear shock do I need to get? Thanks for the help. Also, should I get 2.1 tires or 2.3?