I'm also using SD 2 with V-drums.
I agree to quantize the kick on it's own for sure.
For that matter, if you can segregate each drum instrument to it's own track, you can do separate quantizes for each.
For instance, cymbals are the least likely to need it, but the kick almost always.
Myself, I would want the snare to have very little or no quantizing at all - but do editing note by note, as most snare hits for me are pretty good just where they are.
I have Sonar X2a but not sure how to do this, as I've never tried - you may have to use CAL scripts.
For me, now using Cubase 7, there is an option to 'Dissolve Parts', and it separates them into their own tracks automatically for this & other reasons.