Review: T-Mobile MDA

I've had the MDA since the day it came out.. (I work for TMO,) and while the screen looks pretty bad with the brightness down.. it can be turned up very easily. Go into settings>system>backlight. Voila! It gets bright enough to counteract most direct sunlight. As far as reception goes. Just flash a QTEK radio rom to it. I now have a phone with strong enough signal to make my computer speakers buzz from across the room. AS far as setting MP# and WMA ringtones.. the easy way to do it is to tap and hold on the music file until you get a dropdown menu. One of the first options you see it "Set as Ringtone." Done! My only problem is that the windows platform is not friendly enough. Granted.. I have no problem using it.. I'm a total phone and computer geek. But we get alot of returns just because people are intimidated by it. The device also tends to be slow sometimes as it has VERY little memory. While this phone does EVERYTHING i could possibly need it to do. The little problems drive me nuts. (Lockups, slowdowns, etc.) It has motivated me to find a different smartphone (Likely a Sony P910 or other symbian platform.) - Any suggestions?