...Or die.
Raptor 350 should do it, if you don't already know how to use a manual 6-speed the 350 will be easy to learn on. It's just a warrior with new plastics basically, **** engine been around 20 years it's a real solid platform.
Also check out the 06 honda 250ex, it has the sportclutch... kinda like a hybrid between an auto and a manual clutch. (it's a manual but you cant stall it)
Another option suzuki ltz250, semi-auto 5 speed entry level sport bike, shaft driven. very low maintenence.
If you can already ride manual clutch check out the 400ex, the 06 models have reverse and updated plastics. Also check out the z400, manual clutch, reverse.
There are so many options. It's all gonna come down to your experience, weight, height, and how serious you are about the sport.