At first I was interested in the Epic, especially with only 2 more day to return my Evo. I really considered it. But after looking at it and reading reviews I'm convinced I made the right decision in sticking with the Evo.
1. I'm not even going to pretend I know anything about color depth/saturation/pixels etc. but the Evo looks fine. Coming from a Pre, which according to others has a better screen than the Evo, I haven't noticed any inferiority. Someone would have to show me both phones side by side with the same picture to prove that to me, because in no way does the Evo appear "dull."
2. 3D Gaming? Really? I have a PS3, Wii, and 360... if I need to pass the time while out, I'll play a simple time waster, like doodle jump, or frozen bubbles. And the high performance games I've played on the Evo run fine. Also, with regards to the gpu, (again, not an expert here) the UI runs as smooth as I would want a phone to. Its fast and smooth 99% of the time.
3. Coming from a Pre, I wanted my next phone to have a slide out keyboard. I was hoping that Palm would announce a new device similar to the TP2's form factor, or the Epic 4G's. But after using the Evo for a month, I can really appreciate the sleek form factor of a slab, and no longer have to deal with loose sliders that make the phone feel fragile.
4. Typing on the Evo took some getting used to, but I am now typing at speeds close to if not faster than I could on previous physical keyboard toting smartphones. And although the Epic is only 1.5 mm thicker, why would you want a "thicker" phone? Also, do you really want to flip your phone sideways every time you want to use the keyboard, resulting in a loss of vertical screen real estate?
5. HTC vs. Samsung, check their resumes.
(P.S. Could those app icons look any more like iPhone icons?)