My listening genre and desire to extract the most "slam" from recordings mirrors your goals.
I listened to the Scout and P3 side by side with the Dynavector 10x5 and it was a no brainer for me: the Rega is the clear winner in slam, punch, and "toe-tap" factor.
The scout has a smoother, more refined sound to my ears which is why I think many audiophiles prefer it. If I were a classical listener I'd lean towards the Scout perhaps, and the Scout is clearly on another level with regards to aesthetics - it's a beautiful table.
For rock and jazz, I just simply preferred the faster sound of the Rega (no heckles from the peanut gallery please - my P3 runs dead-on 33.33rpm...); the fact that the P3/10x5 combo ran me under a grand new compared to close to $2k for the Scout/10x5 combo was a serious factor too.
As for VTA - it's simple enough to adjust with the cheap Rega spacers.