I have two Avistar's, one with a Thunder Tiger .46 Pro and one with the OS .40 LA. The .46 is a great engine and has more than enough power to do just about anything the plane can handle. The .40 is a good little engine to just putt around with. It doesn't handle upwind very well, but does a good job. For the money I just don't think you can go wrong with the TT .46. I have two of them, one with over 80 flights and a serious crash on it and the other on a 4*40, neither of which have ever given me a lick of trouble.

A quick note about the .40 LA, we had a public welcome fly day yesterday where we let the general public come and see what we were up to. I had my Avistar with the .40 on it there and one of the better pilots in our club was using it to let people take a turn on the buddy box if they felt like it. Considering our small club size we had an excellent turnout and figure that the plane was in the air for over 4 hours. It can go about 28 minutes on a full tank (10 oz.) so the people got a good chance to see what was what. The plane is one that I crashed in Mid December last year and got it back together about 2 months ago. The weather here is very dry right now and the temp yesterday was right around 89 degrees F. We are flying at about 6000 ft. ASL. The engine ran fantastic, not a bit of trouble. This is a bit lengthy, but I just wanted to let everyone know that even though the LA .40 is a bushing engine and probably not made for this kind of abuse, it impressed me with it's overall performance. Great little machine.

T.