5 speed SA is great IMHO. I`ve got an older 5 speed bike (w two cabels) and did not like it since It was a lot of fiddeling to adjust plus the outer chain was exposed when folding so had to remove it when traveling with the bike. My bike did not have the brace on for the rear der so the new 5 speed was an easy and cheap solution to get more than three gears. It is almost same weight as a three speed. Wery happy with it.