good to see your interest in silent flight. The spirit is some what of a floater. meaning it does not fly really fast but from experience it will thermal until out of sight. The asw-28 will take a bit more flying to keep it in the air as it will need to be flown faster to maintain a decent l\d. with your flight experience neither plane would pose a problem. I would however suggest a plane that has spoilers or flaps to help shorten the landing. with a glider you only get one shot to put it down, unless you like down wind landings. or alot of walking