Yamaha quad please help choosing ?

For what you want to do the Yamaha Blaster would be the best quad. The Blaster is a 2 stroke. The Breeze is a four. The Blaster doesn't have reverse. I can't remember if it has a key. It does come stock with a tank for your premix oil. A lot of times these tanks get taken off to save weight or the oil injector stops working.