I'm debating between a Cheetah Metro Scooter 50cc or a Cheetah Cruiser 150cc. Which one is better?

I am looking for a dependable but affordable moped scooter. I have narrowed it down to 2 Cheetah Motorsports gas scooters, the Cheetah Metro (50cc) and the Cheetah Cruiser (150cc) but I don't know which one is better?