I always had sport bikes....an 04 GSX-R750 most recently....got bored with the one dimensional ride....so I got the 07 M109-R...haven't looked back once. It has huge torque....big horsepower...and decent handling for a bike of it's size. I love it. It eats up the over the road riding....and is still fun to hammer through the twisties.
Lately, though...I've been obsessing about the ADV ride...I've got the hots for a BMW 1200GS...not as a replacement bike...but as an addition to the stable.