Try this
Get a used Ducati, preferably a mid 90's model like a decent 900ss or 750ss. They have approximately similar power to the 600, weigh a bit more, are a heck of a lot more comfortable, and they will not lose any resale value (unless you rash the heck out of them). Spares are still available from the factory for a few more years, and they seem to sell on ebay for about $3000 - $5500 depending on model/condition.
They're a hoot to ride, relatively reliable, inexpensive to own, and inexpensive to insure. I also believe that because of their construction and geometry they are a good beginner bike - nice a easy to lean into corner, less chance to drop in a parking lot (the seat is nice and low). If you find one with full fairing they are gorgeous as well. And just 'cause they're italian, I guarantee that they'll be a babe magnet.