The best thing to do, is get to HQ, and get your bum on every 50cc bike he has there. You will find that is the best way to determine what bike is for you.
I bought my Bee Wee from looking at Scooter Magazine, and got my dealer to get it in site unseen. I am just lucky that this scooter suited me. Not everyone can do that!
And mentioning Scooter Magazine, the new issue has just come out, so go pick up a copy, it's a great resource.