Welcome bierto, great choice on the bike. I managed to get my hands on a used 2008 848 for about what you paid for yours.
I never rode the '07, but I did own an '03 R6 for several years. As Tuned previously stated, a powerband with much more "elbow room" is something I find very useful in the city. I've only had my Duc for a few months now and to be completely honest with you, I, personally, am still trying to wrap my brain around the way these things corner. When I had my 98 Superhawk(a V-twin), I had to wrestle the thing into a corner and fight it all the way out of the turn. After I moved to the R6, the turns seemed almost telepathic. Just think about turning and the bike puts itself in the corner. The 848, to me, is right in the middle of the two. It turns in so dang fast, but then makes your shoulders and triceps prove their worth in order to keep your line. Once you find a straight stretch of asphalt, that wonderful Ducati twin doesn't care if you are a gear(or two) higher than you should be. Just open up the throttle and over 60 years of Italian engineering are perfectly dispensed from rubber to road.
I liked my R6, I really liked my Superhawk, but I love my 848.