Active Crossovers - What really works?

I think I want to bi-amp my speaker which, according to conventional wisdom, means using an active cross-over. There are many opinions and options available for consideration. I want to hear from those who have successfully employed active cross-overs in their systems and the results of those cross-overs, passive or active, and room correction in approaching accurate musical reproduction. Please provide details on equipment and software used to achieve the musical reproduction goal. Your detailed advice is greatly appreciated.

Thanks,

Greg