I don't especially like the feel when pressing the buttons

Finally, the only other issue I've noted is pressing the speaker phone button on the HD2 locks it up (or at least while accessing voicemail).

I made several attempts to press the key as lightly as possible, but could not eliminate the clicking noises of my finger pressing the key from the recording

I have disconnected calls often by holding the handset too close to my face...it ends up pressing the call button and hanging up the phone.