I have several bushed engines and they run just fine and have lasted for years. the OS FP line were and still are great motors. for the money they are fine . On the LA series get the 45 (it runs as strong as most BB40s.) However I recomend a Ball Bearing motor if you can swing one. I like the OS 46 fx and have heard good stuffon the ax series also. you can have a TON O FUN on a bushed engine they are tough enough!