Some very nice bikes here! Denis' ravings about old BMWs has me wanting something from the 70s.
I just finished rebuilding the top end on my RD350. Fired right up after sitting in a corner of the garage for the past 13 years. Purrrrssss like a kitten. Already up on Ebay to make room for new bikes. These things aren't worth much as so many were made. Its gonna be a while before they're investment grade bikes. Cool little bike, though.