Lone,
How have you been using your Passives in the past? I have always used mine with Electronic crossovers. My two main rings all have passive speakers with no passive crossovers.
My reason most of all for not liking Powered speakers are thus:
1. Since I always spread my speakers, I can't see if the active amp is clipping or have ready access to the controls behind them.
2. I don't want the hassle of having to run two sets of cables, AC and Signal.
3. The Frequency is limited by their onboard electronics/filters etc. An Electronic crossover and EQ will do more for me with a Passive speaker than a basic powered speaker.
4. If one component fails, speaker or onboard amp, the other goes. With my present systems/configurations, I have a spare speaker I can use as fill in and also spare amps with me at all times.