I had never heard of Daber Audio before the auction, and I must admit that the aesthetic of the speakers had a lot to do with me bidding on them. It was pretty easy to do the math and realise I had paid a less than what it actually cost to produce these speakers, so I had no real worries about getting a fair deal.
The build quality is awesome! And they are absolutely gorgeous in person! I've had quite a bit of correspondance with Daber Audio's founder Steve Brown, and he's a great guy. He's an audio geek like us, and has been a lot of fun to talk gear with.
Steve mentioned to me that he thought the speakers sounded best with the domed mids at ear level, and indeed I came to the same conclusion.
The standouts for me are the imaging and soundstage. Those are two characteristics that are most important to me with speakers. And that is the main reason I've owned mostly two way bookshelf speakers. The exception are the ESS AMT 1Ds I once owned, and the Heil air motion transformer on those had fantastic imaging and soundstage. The 12" woofer and 12" passive radiator was a little wooly however. I've been known to sacrifice bass in favor of imaging, and I really don't like loose bass. The 8" woofer of the M3 is a particularly good choice IMO. It has enough bass to satisfy all but the cronic bassheads, but is fast and tight as bass should be. I haven't even bothered to integrate my two 10" powered subs yet. I'm also a mids guys, and admittedly I think I've lost some of my ability to hear the upper most frequencies, due to my job. These have glorious midrange, and are somewhat reminiscent of the K1000 in that regard.