We assumed the leaked Galaxy S Pro would have Samsung's Super AMOLED screens, but thankfully one of AndroidCentral's tipsters has gone the whole hog and blabbed the specs of what's thought to be Sprint's second 4G phone.
I've not been a fan of Samsung's phones so far. Cheap, plasticky hardware, horrendous TouchWiz UI, and a confusing line-up of similarly-named phones have all made me stay far, far away—even from the Android phones. But I'm a sucker for a slide-out QWERTY, and when HTC just doesn't seem to be delivering them anymore, then it may be time to consider other brands.
Like Samsung—whose upcoming Galaxy S Pro is said to have a "very smooth" keyboard, with firm, raised keys. My feelings on Samsung's hardware could be well justified again, with AndroidCentral's tipster reporting that it felt very plastic—though of course it could've been a prototype that may well change before it's outed.
Shorter, more narrow, and thicker than HTC's EVO 4G (but this is with a slide-out keyboard, obviously), the screen is "gorgeous," and there's a 5MP camera on the back with 720p video recording, and a front-facing camera for video-chatting at VGA resolution. The processor is thought to be an ARM Cortex A8 clocked at 1GHz, and there's 512MB of RAM, and 8GB of ROM.
Other details the tipster spared included the fact it was loaded with Android 2.1, slicked over with Samsung's TouchWiz 3.0 UI. That could indeed be the deciding factor, though you could try your hand at uninstalling it. Last but by no means least, the lucky phone-manhandler confirmed 4G is on board, with "Sprint TV [working] fine over 4G, 3G and Wifi." [AndroidCentral]