Round ear over hub props work well with most Mirages. As with any tunnel boat, cleavers are your best bet for top end, but holeshot suffers.
I can spin a 30 Hoss Triton 7100 RPMs with my 2.4 200. The boat gets a little kitey, but it just makes me that much more careful. My everyday prop is a 26" Merc big ear chopper. I tried a Yammy drag prop once and loved it!! The boat was more stable than it had ever been and didn't slip a bit coming out of the hole. The only drawback was I lost 3 MPH on the top compared to a similarly pitched round ear. I want to track down a bigger Yammy or thicker Yammy copy to try/buy when my boat fund builds back up.
I was going to try a 27" SRX once but looking at the cup it had, I was leary about how much lift it would give, so I passed.
The big difference I've seen between Mirages and STV's is that the really fast STV's run flat while the Mirage rides nose high. Something to think about.