Single pickup basses look cooler, especially EBMM's. I know versatility is a big thing for some people but I bought a Stingray for "that" sound. Its perfect, needs nothing. On both my Rays, I set the eq flat and just play. I want for nothing tone wise with this pair.
I did get to try out a Bongo 6 HH recently. It was a righty so I couldn't really play it properly but got to try out the pickup combinations. i thought it sounded very full and rich with both pickups on full but wasn't completely happy with any other setting. I found that I missed the simplicity of a single H almost immediately.
My next bass will be a single H Bongo.
There's something particular with a single pickup bass. Kinda like a statement like "this is MY sound" my sterling is a single H and i still love it even if my SR5 can give me tons of more tones.
2009 is here, this is the year i will finally become a bongoloid