I have the 802 III's with Northcreek crossovers. The sound of the speaker improved at least 35%. The congestion is gone; the sound is cleaner, more extended, more dynamic, better bass. It's true that $1600 is a lot for a pair of speakers worth $2000 on the used market. It's too bad you don't see the Northcreek crossovers on the used market, but I guess those that buy them, keep them.