I just bought the Evo, Epic, and 2 Rumors.
I dont know about the Epic being better then the Evo. If you really need that keyboard get it. But as Ive noticed, the keyboard hasnt been slide out since its been bought. So why pay the extra money for a keyboard that wont get used?
If you go to the the pickerington sprint, ask for Mark M., he'll help you greatly. Tell him I sent you.