Traded in my CBR600 for a Ducati 848. I've had a lot of fun with the CBR, but just look at the Duke...
She's a very different beast though - whereas I felt settled in on the CBR the 848 is very narrow and you feel more perched on top. Where the Honda wailed like a banshee the twin pot roars like a lion... and there's way more power from down low in the rev range.