mustang's a shortscaler, like the gibson eb, i prefer shortscales when it comes to guitar but when it's bass i miss that extra thump/oomph you get from a regular scale bass, i love the mustang silhouet though, same for the sg-like eb, but the sound...i don't know..it just depends on what you prefer/need in a band situation...they sound cool (i actually like the gibson eb better than the mustang bass) but just try them out when you see them somewhere at a store, try as many as you can before you buy, haha...that sounds 'wrong' doesn't it ?
