I didn't even mention the 2 pickup versions, my all-time fave MusicMan bass is the Sterling HH.
I own one of those, and I love the thing to death. American quality and beastly tone whenever I want it.
Maybe the older 'Rays were one trick ponies...but people love them for that one trick. It's like a P bass. Whatever. It does that trick pretty well.
Also, you can watch this video on YouTube for some help too. It's Ed Friedland's review of the bass and it's honestly part of the reason I bought this bass (I understood the differences better than when the dipstick at GC was telling me about them). He talks about the differences in the tone between the Stingray and the Sterling as well as does a quick run through of a few of the tones you can get from the Sterling.
Sorry, I don't know how to make the link look all pretty like.