I guess I'm going to disagree with the masses here and say it might not be best to start with that ZX650. Granted, it, as well as the SV650/650S are much tamer than the "R" bikes, and are overall well suited to newer riders (and both have comfortable riding positions).
BUT, I don't think you should be considering a NEW bike for your first. If you're really concerned you'll get "bored" with a starter bike, do this: pick up a used 250 or 500, ride the heck out of it for a year and then turn around and sell it to another new rider. You can pick up used 500's for a couple grand, and more often than not, you can turn around and sell them for nearly what you paid for them (since you're buying it used, someone else has already taken the big depreciation hit).
Something to remember... you WILL most likely drop your first bike. Yes, frame sliders can minimize damage to fairings, etc... but not always, and not 100%. If you bought a brand new bike, you'd be utterly crushed the first time you dropped it.
Not to mention, having a new bike adds pressure to a new rider just learning....
Just some things to keep in mind... I absolutely adore BOTH the ZX650 and the SV650S (both of those, as well as the ZZR, are on my list of potential bikes to upgrade to later this year), so it's nothing against the bikes.