Maybe look into a Yamaha FZ1?
If you are wanting something more upright the Z1000, S1000R, FZ1, etc all fit the bill. The other big difference between those and the super sport (race replica, RR, etc) motorcycles is they are tuned for more mid range power instead of the top end. The 600/1000 super sports are tuned for high rpm peak horsepower, which isn't necessarily the best for street riding. While keeping a 600 wound out on the track is fun, mid range torque is nice on the street. I'd say go to a dealer and sit on some bikes, see what feels good, what you like etc.
Blair
2000 GSX750F, 2003 YZ450F, 2004 GSXR750, 2006 ZX-14
2013 CBR500R, 2016 YZF-R6 - MRA #760
Not interested in BMW s1000 RR..... just BMW s1000R (single R). its a naked version of their supersport bike. Same engine detuned to have lower power, but stronger mid range. Its also ergonomically different where the rider sits more up right...
here is the visual difference
2013 BMW S1000RR
1973 Honda CB750 / GSXR
1987 buick grand national
'06 GSXR 750. Race Track. Everyday Commuter. Long distance tourer. Sold
On the other hand, i may sell the bike completely and not go with anything for a while... that though has crossed my mind as well.
i am gonna become a father in a month and i feel like investing into some kind of off road moto sport that i can do with my future kids(atv type of deal)...