I know that many people hate them, but I use an OS .46 LA on my LT-40 and it works great. It's a great starter engine for a fantastic starter airplane. It's very light, has slightly more "crash tolerant" bushings, and is cheap. I would recommend it especially if you weren't too sure how far you are going to go in this hobby. You can't go wrong with similar priced TT's or Magnums either.

Just remember, engines today are great. If you throw out the occasional manufacturing defect, all the engines out there will be reliable for you if you take care of them and run them right.

Just my $0.02 and it's worth what I charge......