Totally understand the want for the hot motor sound. While it may not be the most desirable street choice, it sure sounds good at the stop lights, lol!

The Thumper cams (and some others now have joined in) seem to do a good job of both worlds (sound and performance without losing too much low end). There will be scarifies though, so read up on all the specs and check their reviews, I would check out some of the youtube review posts to see which cam gives what you want.

Good luck!