The Evolution trainer power system is a good one. I've maidened three or four of the PTS planes and one Alpha. Engines started right up and ran great. I am a fan of the TT46 PRO and I think is the best engine in it's price range. You would not be disappointed with either one. LA's work ok if you already had one but if your going to buy one there are better engines to be bought for about the same money. Please check for my PM to you.
Fred