Depends what you want - I did 28,000 miles on my RF & 65,000km between my 2 Bandits. The RF is the quicker bike through the twisties but with good rubber a Bandit won't be far behind. The Bandit is a heap more comfy ride position wise (K6 seat wasn't the most comfortable though).
The RF's have a lot more vibes through the bars and after big miles this got painful for me - a did 3 GC's on mine and my hands were aching something fierce afterwards. Did a GC on each Bandit and there were much better - a lot less weight on hands + less vibes. Bandit also more economical (less revs for a given speed) and less effort to toss around (wider bars).
A very quick summary - both a heap-o-fun!
Bookmarks