Are active crossovers better than built-in speaker crossovers as a matter of course regardless of implementation? In other words are you better off with an active crossover no matter how good your built-in speaker crossover may be and one should consider an external active crossover and bi-amping if the speaker design and funds allow it? Aside from the flexibility that an active, external crossover allows, what makes a crossover good or bad from a sound quality perspective? How does one decide which is a good xover (active or passive) and which isn't?

Thanks