I prefer SwiftKey. It's a great app. A little glitchy from time to time but I know they'll fix it
Nexus ONE
Yeah. Like sometimes when I get a message in my notification center i swipe and brings me to the message app and when I tap to begin typing a message the keyboard never appears. And it's frustrating at times since I have to exit the app just to get it to appear again. Hopefully they fix this and other issues and the next update.
Do any of these alternative keyboards actually remember things you type like your email address (which IS helpful) and was beneficial on Android when I had them. I don't expect or want it to recall everything I type but frequently used and common ones would be helpful and save time.