RE: Jett vs. Thunder Tiger
I have the Jett90, TT pro 46, OS46, ST 51, and Magnum XLS52 so think I can put in my 2 cents on this topic. If I pay 150 bucks for the SA F20 I really don't want to spend a bunch of money for Jett50. I've put the Jettstream muffler on the TT46 and OS46 on my Cermark F20 and that plane can haul ass. There's no need to spend a bunch more for Jett50 for that plane to go just a little faster. This poor guy only needs to invest 50 bucks in a Jettstream muffler and he's done. I may also add a couple of air whistles from i4c to put a smile on his face in regards to sound effect of that combo of jettstream and air whistles. I've done it.
Now, if one will spend 360 bucks on the Cermark F16 w/ retracts like I did, then buying a Jett90 to put on it will make more sense. There are less hot engine choices for 90 size planes, short of fancy pipe set up that makes the plane ugly.
Bottom line: put Jett on airframe that deserves it, not on a little inexpensive sport plane. Just my 2 cents...