I have both. The only advantage I can ascertain is that the active electronic on mine is basically an onboard preamp to modify your sound tonally. Basically you should with a quality bass amp have the same or better controls for shaping your sound. I rarely change my EQ, my PJ bass the pick ups and tone are up all the way, active Warwick is run flat. If I need any tone shaping I do it with my fingers.
That said, some guys like having the ability to adjust tone on the fly on the bass as opposed to going to their amp. So the deal is, if you like to fiddle with your tone, spend the extra buck on an active bass.
One other thing to consider, if you play with FOH support, sound guys are not real crazy about with fiddlers as it makes more work for them trying to counter act your adjustments to make the overall sound suitable. Drop a bunch of low end on them out of the blue and their going to get p*ssed! Do it often enough, and your Bass is going to sound like rubber bands on a cigar box in the house.