Shopping for a motorcycle

[darkshark]

I just sold off one of my cars, my Isuzu Impulse Turbo, which gave me some extra cash. I've always wanted a bike, but only recently started researching them.

Does anyone here own one or has anyone ridden? I've actually never ridden a motorcycle before, but it can't be all that hard, seems like your clutching and shifting simply swap places from hand to foot.

I'm definitely in the market for a sports bike, nothing else. I hate the look and sound of Harley style bikes, they're bulky, slow, and hard to maneuver. Been checking around on craiglist for a bit, and I've come across some really nice bikes, such as this

http://sfbay.craigslist.org/sby/mcy/2059148629.html

I talked to the lady selling it, and she's willing to hold it until Friday if I want it (that's the soonest I'd be able to make it out there). Everyone tells me a 1200cc IS NOT A BEGINNERS BIKE. Well, no ****. But it's not like I have to be wide open on the throttle at all times as a beginner, and I learn really fast, so why not start out at the top?

This is my arrogant mindset though. I feel like I can do anything, and probably could hop right on and be fine with this size bike, but I'd want feedback from anyone with experience.

I was looking around at 600's and 750's, but I've heard people say they get bored with them within a few months. Anyone have input?