For the most part, my MT is working pretty well. I am having issues with the GPS locking, but I've yet to try the fix that someone mentioned in this thread earlier. Bluetooth never stays connected, which sucks because I really want to use my headset with this phone. I'm currently stuck with using headphones plugged into the 3.5mm jack, which is working all right. 3G reception is spotty in remote areas, but works great in the city.
I would recommend rooting the phone and installing the CM7 mod by tickerguy. It is MUCH better than stock, and you also get upgraded to Gingerbread.
One thing that I noticed is that the phone is very durable. I've dropped the phone several times, but there's nary a scratch on the screen. Try doing that with the iPhone.
I'm hoping that an upcoming software fix will fix many of these issues. I hear that it'll be out pretty soon, but they've been saying that for months.