Question about pick-ups

[Dirk Blarinckx]

Hi,

I'm thinking of trading one of my basses for a '98 KS BSRJ5. A beatifull bass but I see it has stacked J-pick-ups instead of humbuckers. I've never played Stacked J's before.... Is there soundwise a big difference between both? Does it come close to the typical "Smith" sound of the humbuckers?
I know it has been discussed before but I can't find a straight answer to this question, so if anyone can discribe the biggest differences in sound between these two it would be very helpfull to me

Thanks,
Dirk