If you are going to lower it anyway, and use it mainly for commuting, I would certainly be considering something comfortable and user friendly, a sport bike/race replica (600RR, ZX6, GSXR etc.) would not even be an option, why would it be? V-Strom, Versys, ER6N, Ninja 650, Gladius, SV650, FZ6, etc., plenty of good choices out there.