The Stingray is for all my funk and slapping needs, for me it's the ultimate funk bass. Next up is the Jazz which has more options to it, it can funk it up - but also suit pretty much anything else. Have had 5/6 strings and found they didn't work in the music I played at the time, but I do fancy a MM styled 5 again.
I am a long way from being unhappy with production basses, I haven't had enough yet to decide if i'd even want a custom.