Originally Posted by Pentaxor 
goodluck dude. hope that the weight and size of the MKII wouldn't be a bother to you in the future.
the mkII is an awesome camera at a nice size and weight for FF IMHO. Its the Canon lens lineup that is the weak point. In the "normal zoom" range they have 17-40, 24-105 and 24-70. The 17-40 and 24-70 both have a bad reputation and cost a lot (especially 24-70) while the 24-105 is the ONLY one in the range with IS but it is an F4 lens instead of F2.8. Pentax 16-50 sits on my camera most of the time, produces better images than Canon and has stabilization. And have you seen how big those lenses are? I still can't figure out why the Tamron 28-75 produces better images than Canon 24-70 but its only HALF the physical size
Once you get out of those normal zooms Canon makes some nice glass... but YIKES - you gotta pay for it.