I have been buying, trading, and lately the last few years modifying and building speakers. I have owned the Large Advent, a pair of Genesis two's, and recently a pair of AR 18's that had blown tweeters, I was given them and put new tweets in. I know it's only a 6 1/2 and not huge, but the panels are 3/4 inch, and it has a proper crossover and wool packing. The mid-bass drivers are in good shape and only have the very beginning signs of surround erosion. I just like, as I suppose you all do, the timing accuracy and phase coherence of the sealed box design. The distortion is so much lower also. I am going to for next project upgrade the HF driver, and rebuild the crossover, as the original has an electrolytic cap in the signal path.