I would not reccoment a 600rr for a first bike. i have been riding for a decent amount of time and i have ridin a wide variety of bikes new and old powerful and slow, my coworker/neighbor just bought a 03 600rr real pretty bike plenty of power probabley the most powerful 600 i have ever ridin. The seating stance is vary vary aggresive, your forced on top of the tank. In corners the bike feels real tight and smooth but i noticed that it constantley wanted to get away from me. The 600rr is vary throttle responsive that is real good for novie riders but for a amature riding could cause a lil trouble. Now in no way am i a professional i am just giving you my opinion since i have ridin this bike numerous times. The best advice i can give is if you lookin for a bike and it will be your first bike i would buy a 91-94 (area) Honda CBR F2 they are awesome bikes, really forgiving motorcycles,Plus if you drop it (which most new comers do) they are fairley cheap to fix. Ride that bike for like 3-6months enjoy then gor for something else.
Just my .02

Derek