I'm gonna start a Tucson Shootout thread, but when I went out to the field to watch, I saw a H9 Ultimate with a DA-150/mufflers and I believe a Mejzlik 32x10 fly by Steve Saulovich and it had more than enough power. Now that I've got some time on my ZDZ-160 and it pulls at least as hard as my 150 did, I'd say that flying the Ultimate with the 160 will be a great match, and we're at 2700' ASL.