well if you do get the zzr you should know that is actually the 00-02 ZX6-R (ZX600J) however zzr's older than 2005 are the ZX600E (a much older heavier bike)
ZX600E
ZX600J
I'd recommend you stay away from the ZX600E zzr, not really because it doesn't have enough power for you (it definitely will have plenty) but it's handling isn't up to par with the other bikes your considering. The Ninja 650r, SV650 and ZZR600 are all good choices. One problem people have experienced with the Ninja 650r is that you can't lower it (I wouldn't recommend lowering a bike anyway) due to the way the suspension is built, this wouldn't be a problem for you at 6'0" though.