Check out the Thunder Tiger on Quantums website. I have the FX in my Midstar and the TT Pros in most other planes, I'm happy with the performance of the TT. The Pro46's we have start on first or second flip all the time. Not sure what you are asking on the exhaust question. I never considered the LA series from OS and the Pro46 is about $35.00 cheaper than the FX.
$74.99