I really like my T-Mobile myTouch 3G Slide. It is the right form factor for me and has a usable keyboard. Only 600Mhz but plenty fast and will be much faster when Froyo is available later this year. Plus I tether it via usb cable when I travel. The network speed is quite good in my area 1.5Mbps up and down.

I looked at the EVO, but it was too big and power hungry for my liking. And I didn't want to root the phone to "fix" it. Great screen though.