Has anyone ridden both bikes? I had the chance to ride a 12 WR over memorial weekend and was pleasantly suprised by how well I liked the bike. This particular one had the GYT-R exhaust on it and was a quite a bit of fun to ride. But I don't really like the extra weight (though you don't feel it when riding the bike) or feel the need for e-start. Plus, I found a holdover 2011 for under $5k. I've never ridden the YZ though, and don't know anyone who owns one that I could try out. I don't race, mostly trail riding in WA and ID with an occasional run in the desert or flailing about on an MX track.