WOW. I just brought home my new CBR F4i. I've ridden dirt bikes and (don't yell at me) Harleys but never a sport bike. In fact my Harley is my daily driver (100 mile commute). But OMFG this Honda is incredible!!! I didn't know it could be THIS FUN!!! I think it's time to sign up for the advanced rider course though. I feel too comfortable too soon... if you know what I mean. Looks like I'll be hanging around for awhile!
With previous riding experience outside of sportbikes, it's easy to get complacent. Know your limitations and stay within them. Getting too comfortable too quick can lead to a very uncomfortable stretcher real quick. Trust me I know