We\'re about to build a Blackberry application but would love some input on whether to implement using J2ME (MIDlet based) or Blackberry native (UIApplication).
I unders
I agree with Anthony, I'd go with the BlackBerry specific APIs for BlackBerry apps. J2ME is just not portable, and BlackBerry has a lot better support for their proprietary APIs.
From my experience: stick with the native BlackBerry UiApplication. It is the best for BlackBerry and provides the best user experience for BlackBerry users. You can't copy that with J2ME easily.