Passive. I was really into the active eq thing (never active pickups) when I gigged a lot a few years back, but right now that I do the occasional jam and mandatory bedroom concertos, I find passive basses to be sweeter, rich, straight to the chase, and very efficient. I definitely prefer to have an outboard preamp, like my tried and true SansAmp Bass Driver DI, or my recent purchase, the Aguilar Tone Hammer DI. I do like the control an active bass provides, but the same and more can be achieved with a great outboard preamp pedal or rack, TO ME.
I own 2 passive basses (one p bass and one cabronita p bass) and 1 active (G&L L-2500) which by the way is turning into a fully passive bass.
PS. Someone mentioned that the effect pedals react better (at least to him) with passive electronics, this is somewhat true. Overdrive just sounds amazing! Much warmer than with active pickups, which I find to be to raspy and aggressive.