Awesome:
Display - best screen i have ever used ever. The colours are phenomenal, it looks great at pretty much any angle.
Apps - huge range, my favourites at the moment are Paper, DC Comics (the retina display comes into its own with comics) and IA Writer. Games are fantastic, currently playing through Bike Baron & Real Racing 2HD.
Battery Life - It seems to last forever.

Not awesome:
Notifications - I just dont like the iOS method for notifications, Android is significantly easier to use and gets more done
Misc - it can feel a bit heavy with prolonged use, and embarrassingly I have dropped it straight onto my face and it wasn't pleasant (having also done this with the iPad 1, I can say the older is much more face-drop friendly)

All in all its probably my favourite gadget at present.