I've worked with both active and passive loudspeakers, and both can sound great. Or terrible... design and execution are, as always, the keywords.
For myself I'm considering going more or less active. I'd like to purchase a second (Threshold) poweramp, have them matched and remove the crossover in my Apogees. Filtering would be done by a modified Behringer active crossover placed between the pre- and poweramps. But since that will require some investments and I'm a little short (as always actually) on cash it'll probably won't be soon.
For myself I'm considering going more or less active. I'd like to purchase a second (Threshold) poweramp, have them matched and remove the crossover in my Apogees. Filtering would be done by a modified Behringer active crossover placed between the pre- and poweramps. But since that will require some investments and I'm a little short (as always actually) on cash it'll probably won't be soon.