While the vast majority of audiophiles will love the kind of changes North Creek makes on a speaker, they are not for everyone. The changes will remove much of the brightness, irritibility, grain, and grunge of the speaker. While most of us say that is something we want, it may seem to make the speaker less exciting to some people. A loss of the "boom and sizzle factor", on the "sizzle side". Related to the smoother midrange/treble. Some people don't like that. We all have different tastes. I also have to say that if the crossover upgrade is more expensive than the speakers themselves, the question of value looms LARGE. Very large.