I'm with who ever said they'd like to have both. I love to ride wheelies and play, but it's a b1tch on my banshee compared to the 4 strokers. I rode a 400ex and the z400. I like the feel of the 400ex better, the z feels like a kids quad for some reason. But, the z did have some low end pull. I'm not even sure why they put a first gear on it.
With that said, the 4 strokers are good to ride in small places like your back yard... The banshee is fine in the trails. That's where I mostly ride. On the track, it's mostly about skill anyway. And, on the straights, where most people want to race you, it's about power. Guess who's going to win.... the Banshee.