I thought I'd pop in and post an update as you have all been very helpful.
I did go check out the 2011 Toyota Highlander on 1/29/11 and ended up trading in my '07 X3. Got a great deal I couldn't pass up.
I have absolutely NO regrets at all and am thoroughly enjoying the new ride and the features I was missing in my X3 (back-up camera, heated seats, auto dimming rearview mirror, compass, FOUR CUPHOLDERS, etc.).....LOL! Love the size and responsiveness too.
For me, it was the 'right' decision and I am not looking back. It's actually a relief that I won't have to deal with my acceleration issues (ok no Toyota jokes please ) and other service visits anymore.
Anyway, I will always love bemers and wish you all the best with yours!
Thanks again for listening