Smartphone help?

I am looking into getting a smartphone for AT&T. I will use it primarily for personal email and internet, although at some point I might hook it up to my work email.

I am leaning towards the Moto Q Global, since it has 3G at seems to have a great keyboard.

But i really like the blackberry curve, but lack of 3G is concerning.

What about the Palm Centro? There is also a new BB Curve out with WiFi...??

Thoughts? Advice?
I looked at the Treos, but unfortunately the 750 is a little bulky and pricey.