What are these things that you don't like about the epic?
Here are a few things I can think of off the top of my head:
1) STILL no Froyo. It's October, come on Samsung!! This is remniscent of the Moment...
2) applying the latest DI18 updated resulted in hours / days of frustration & wasted time. I got a mysterious BML error when trying to update from the stock DI07 OS. I even wiped the phone, full factory reset, and it still errored out. I tried updating from the SD card instead of OTA, and still no go. Finally I downloaded the entire DI18 ROM (~200MB) from xda and flashed the phone to bring it up to date.
On the Evo the OTA update was a simple one click, one minute affair, compared to the terrible Epic update experience.
3) GPS sucks. We all know this. Evo's GPS just works, and works damn well.
4) Samsung removed several stock Android widgets. There is no default Android calendar widget!!
This was on the Moment, and I use it quite a bit. Why Touchwiz / Samsung removes it is beyond me!!!
5) screen is a bit loose from keyboard, slides a bit. I guess it's better than the alternative, where it's too tight, and will scratch the keyboard (see other thread in Epic forum).
6) I seem to encounter issues every now and then, trying to download / install apps from the market. It will hang, as if I never tried to download. Only when I turn the wifi on the phone, will the download occur. This has happened several times now that it can become predictable.
7) lack of custom ROMs. EVO has many many ROMs.
8) Samsung calendar is a bit hockey. When you add a new item, it does not go on your Google calendar by default. You have to carefully select the Google calendar option or it will just be a local item on your phone. Stupid!!
I use calendar all the time and this is lame.
9) The phone frequently goes in and out of 3G, along with the associated annoying chime. The Samsung Moment did this a lot too, so this is not a surprise (just like the GPS).
10) Epic doesn't have a stock voice recorder. I have to download one from the Market. Not a huge deal, but one of those tiny little annoyances.
Things that could be issues on the Evo:
1) possible charging port issue that others are reporting. I have not had issues yet.
2) Sense calendar doesn't let you edit directly like stock calendar, you have to long press calendar items in list view to edit it. Very unintuitive. Why manufactures screw with the stock calendar is beyond me. At least not as annoying as the Epic calendar.
3) no default notes app. Epic has a really nice notes app, even if it doesn't sync online. Android should have a standard notes app! HTC does offer a Notes widget you can download however, I have not tried. A minor annoyance.
4) no Swype. Ironically the Epic with a slide out keyboard has a nice Swype app. I'm using Slide It on the Evo for now though...hope it won't expire.
Both phones are huge leaps forward to the Moment (I got less than a year ago), so it may sounds like there are a lot of complaints, but in reality I am happy as a kid in a candy shop every time I use these phones. Having both and alternating between them is awesome.