OS LA 46. I love mine and have had it for about a year... maybe a little less. True it might not last that long but how you fly might have something to do with that as well. If you putt around in your cub at half throttle all the time I think you'll be very happy with it for a long time. For me and my Fun-51 I rarely got over 1/2 throttle and almost never over 3/4... OK full throttle for knife-edge but that's it. My next plane will be a cub and I'm considdering another 40 or 46 LA for it. If you have the throttle pegged all the time the LA might not be for you.