What are you looking for in terms of feel (stiff or loose?), in tone (trsdigtional flat sound or more mids or highs), and what kind of music are you playing? Your answers might help get a more applicable response.
I never tried flats on a Special, but on a 2007 SR5 HH (has the Sterling 5 preamp and ceramic pickups) and I LOVE the sound on Chromes on that bass. They're the only flats I've tried on that particular bass, but I've had had Chromes on most of my basses at some point and have liked the sound of them regardless which bass I put them on. They start out pretty zingy for a flat, but will mellow out so they still have more top end than a typical/traditional flat, but not as much as with a typical round. They're also a relatively stiff feeling string, which I love, but if you prefer a more supple feel then I wouldn't suggest them.
I've tried other flats on other basses and could decribe what I like and don't like about them, but I don't know if those opinions would apply since they weren't on a Stingray. Although, I have had three different types of flats on my L-2500, which is also a pretty aggressive sounding bass, so I could offer opinions based on that bass if you want.