I had an OS65LA that I had on a Texan II.......forget the manufacturer's name but it was a pretty big airplane. The 65LA moved it around smartly and was easy to start and maintain. Way back when, about all you could get was bushed engines........and they flew and lasted a long time. I have 2 OS25LA's on my Twinstar and they fly really great. I've never had a flame out and rarely have to adjust them......that's a thing with twins.......keeping them sync'd but I have not had a problem with my LA's. Had two OS40LA's for another twin but ended up giving the whole package to my son. I'd give two thumbs up to the motor you asked about.

Andy