The quality and flexibility can vary widely. I think actives get a very bad rap because the inexpensive and older active pre-amps aren't very flexible and tend to be a lot more metallic. A few no-name active basses I've tried a long time ago had two modes: tin can and even bigger tin can. Good pre-amps can really expand the vocabulary of the bass to allow for vintage and modern tones with ease.
This. To the OP - the active bass can be reliable if you make sure the battery is fresh. That said, every active bass I have played under $1000 sounded like crap to me. Personally, I like the flexibility of a preamp but if you're on a budget, I would go passive.
