If you have time to wait until Q1 2010, then Qt might appeal to you then, if you want to code for future (Maemo 6) too. See http://talk.maemo.org/showthread.php?p=330308 thread for more info.

If you want to do things right now, and specifically in a way that Maemo 5 does things in the UI, then using Hildon (and Gtk) might be more appealing to you right now.