I just got my 2009 TL SH-AWD/TECH last week. I love the design and the gadgets, but I am really disappointed in the constant rattling each time I hit a bump. It sounds cheap and drives me crazy. I found out after purchase that this has been an issue with Honda/Acura cars for a while. As much as I like it, I am seriously considering selling the car if the dealer can't fix this. The ride, in general, is a little harder than I like.
The MID and the Nav system are absolutely great. Love the voice command, HDD, and iPod connection features, and my first experience with XM radio is very positive so far.