Seriously - this keyboard is light years ahead of the default virtual qwerty.

I bought the Moment for the hard qwerty and absolutely love it, but hated to have to open the phone for each and every little thing due to the god-awful virtual keyboard.

Installing HTC's Touch Input was the best decision I've made. It's super responsive and typing is almost as easy as with the iPhone. I use the T9 numeric as opposed to the full qwerty. There's also a compact qwerty if that's your thing (Blackberry-esque)

It's not on the Market AFAIK, but a quick google search will show you where it is. Even has a calibration tool! This + Handcent = SMS Bliss

 

Perhaps it's due to the fact that I use the numeric keypad mode for SMS, but to me it just feels so much more "roomy" - Could never get my fingers to push the right thing on the stock keyboard.