HTC Diamond or Wait
Well, sending a text is a bit better on the Instinct due to it doing texts in landscape mode. I'm still trying to figure out how to do that.
The Touch Pro (Diamond with a physical keyboard) should be out in about a month. If you do a lot of email or extended typing it will probably be worth the wait.
That is how I set up the original HTC Touch and when doing text the screen will rotate to landscape mode and you can text with Full QWERTY in landscape mode.
I have read reviews where this option for the Touch Diamond in the settings menu have been removed due to the G sensor.
Thanks.