[scottyb]

Performance wise they all have about the same. The gear ratio and tire sizes so the speed is about the same. The Ezgo has the easiest access to its controller for upgrading. Club Car controller is behind the batteries, not easy. And Yamaha access is from the rear which is okay unless you add a rear seat. Then you will be removing the rear seat to do much of anything.
CC is lighter aluminum frame. This results in a better power to weight ratio. But the aluminum frames are subject to stress cracks. Generally these are the 3 major makers like Ford, Chevy, Dodge for trucks. I've have good carts and good trucks from all 3. Good Luck in your search.