I don't have the Mustang, but most of the line. The Mirage comes down at a pretty good clip, and I never have to walk far. My Suma hit the only bush for miles hard enough to snap a fin off. The Barracuda I didn't see land, it ended up at the LCO table without a fin. Our ground is rather tough, but depending on your soil and site size/wind it wouldn't hurt to bump it up a size.
Joel. phx