HTC SDA (USA) / SP5m (Tornado)
I've got some gripes ...
1. First, I often pull the phone out of my pocket to find the browser and/or the media player open. The buttons obviously get easily pushed and I can't figure out how to lock the keypad.
2. Unless I'm missing something, the Speed Dial ain't speedy. With the Moto, I'd just hold down, say, number 2 to dial that person. On the SDA, it's 2, #, then wait a second or two to OK the confirmation screen.
Those are the ones I can think of immediately, but I'll add more as they come to mind ... 🙂
My biggest annoyance is the keypad, I get really paranoid when using it - but it's a very minor problem, the screen and Wi-Fi quickly makes up for it - have fun
Keypad lock is equally easy with the explanation in the other response to your post.