My son is six years old and wants to ride. Raceway Park in Englishtown, NJ says he is old enough to ride in the 50cc class. I need a recommendation for what brand of bike he should ride. I don't want to spend $1500 on a honda or any of the other top brands until I see how serious he is. I feel it should be fully automatic for now since he is only six and shifting may be a bit much for him. I want it to be fun, not frustrating. If he sticks with it I'll get a semi-auto and then when he is ready he'll graduate to a manual transmission.