Well I've actually tried the drive-'n-feel test a few times, and the rims stay cool as do the rotors. I'm still leaning towards a suspension or perhaps a tranny type thing. I saw a post on here about a shaking transmission - at this point I'm brainstorming before I take it in again and spend more $$ on something that isn't even related to the problem and then be told I'm crazy - there is no vibration.
Thanks for the advice gents.... I really do appreciate it! I'm game to listen to anything at this point.