I am curious why you would dump your EVO for a Droid X?
I was using a T-Mobile HTC HD2 which I loved, but hated T-Mobile's poor 3G signal strength. So I went to buy a Droid X, but no one had it at the time. So I decided to try the Samsung Galaxy S phone. The T-Mobile Vibrant still suffered from pour 3G (so never again going with them!), so I went with the AT&T Captivated. Their signal was great! But the phone had too many things I did not like. Most of my time was spent just trying to get their TouchWiz desktop to look like HTC's Sense UI by using Beautiful Widgets, but it was buggy. And the OEM, K-9, and MailDroid e-mail programs were horrible compared (once again) to the one in HTC Sense. So I figured that if I wanted HTC Sense, and wanted out of T-Mobile, but wanted something big like the HD2, then might as well get the EVO. So I did, and so far living it more than my HD2.
But the Droid X still does intrigue me! And I can still return it yet, have time. But not sure how I would like the X over the EVO. From what I have seen, the Blur UI does NOT impress me at all. Looks so plain Jane compared to Sense UI. And to get the clock/weather like Sense, I would have to go back to the buggy Beautiful Widgets. And how is the e-mail on the X? That is extremely important to me as well. So I ask you, what is making you swap the EVO for the X?