I am currently waiting for my second JBS to come in (just picked one up on eBay) which has stock pickups, so I don't really know how those sound yet.
However, I have SD Quarter Pounder's on my current one, and all I can say is that it's a beast. I bought this one used as well, and it came with the stock Jazz pup and Schaller on the P pup. Pots were dirty and jack was bad, so I gave the bass an overhaul pretty much as soon as I got it home, so I can't really speak for that particular combination (I recall it being very unbalanced though, but I honestly didn't give it a fair chance).
I also own a Stingray 4, and even though I love the sound of that one too, I keep grabbing the Special w/ Quarter pounders when I'm really feeling aggressive
