I have a Treo 720 from Cingular. It's fly and I love it, but since I haven't had much time to really learn it, it gets on my last nerve sometimes.

It seems to crash or not connect sometimes. I bought a refurb, so I don't know if that has anything to do with its actions or if it's the fact that I really don't know what I'm doing. Sometimes I try to do too many things at once and it just freezes up.
Other than a few glitches, I love it!!