I bought the orp and got a free remote which makes it easy to ring the bell. I like the "short version" of the bell, but as others have mentioned (86 and still kicking) most pedestrians do not recognize either of the sounds the orp makes as "something coming up behind you, be careful". I can ring the ORP a few times and nothing, and then ring the stock ST1 bell and people immediately move over and get out of the way. The problem I had with the stock bell is that the flicker moves around and I can reach for it and it rotated out of the way....