I'm waffling back and forth. Originally I was set on needing a physical keyboard. Then I was at a Verizon store checking out the Droid X and the Droid 2 and playing around with the screen keyboard on such a large screen made the physical keyboard seem unnecessary. I love swype and would use that for 90% of my typing.
The keyboard would really be for gaming, along with the better gaming processor on the Epic. BUT I don't know how much I would actually play games. Sure if I'm the passenger on a long drive or in a waiting room with some time to kill it would be a nice option, but its not like the evo can't play any games, and watching a tv show or something is an option during those times as well.
I've been trying out the pros/cons list to convince myself one way or the other, there are small things like slightly better battery life on the EPIC or my preference for the capacitive buttons on the EVO, but here are the major things for me.
EPIC
Pros
AMOLED
Dedicated Camera Button and Better Image/Video quality from what reviews have shown.
Physical Keyboard + Better Processor for Gaming
More Media Codecs for better media playback compatibility
Cons
Slider design seems easier to break then a single piece phone.
Smaller Screen.
Touchwhiz
No HDMI
2.1
EVO
Pros
Bigger Screen
Slightly Thinner
Sense
HDMI
Kickstand
2.2
Cons
Not well suited for gaming
No dedicated camera button
UI and FROYO advantages will matter at first, but with rooting/customization it might not be as big a deal eventually. I'm really having a tough choice still though. I'll probably spend a few days checking out what gaming is out there because if I really don't see myself gaming that takes away a major advantage for the Epic.