If you see me swing you'll notice that I make a fairly flat backswing it's very old school. Some of this comes from the fact that I played with regular-length drivers as a junior. Since the clubs were too long for me, I had to set the shaft flatter at address and whip it back slightly to the inside.
Now I try to take it back a little more traditionally, but I'm really not concerned with planes and positions. Once I'm set at address, I just turn my shoulders as much as I can. Everything else just comes along for the ride.