I feel much the same way about my 650B conversion. It showed promise at first, then after a lot of refinement (build thread
here), it became my favorite geared bike to ride -- fast, comfy, and capable. Still, it handles so differently from my fixed-gear MTB that the first couple rides each spring are strange...
BTW, are you using a standard B17 or a Narrow? If you like the slender width of the Pro, you might prefer the B17N over the standard. That's been my experience.