IMHO, the new OB surpasses everything in Danny's line except the big LS series (and I don't think he is selling those kits anymore). The bass is amazingly fast and clear. Lower register piano sounds exactly like a big grand . (Piano is what I listen to when really critiquing a speaker since I had a 6'3" Steinway for a couple of decades. I have never heard the low register reproduced so accurately in any speaker) There are some things that the Neo3 tweeter does better (a bit of shimmer in the upper piano register), but the tweeter in OB prototype would definitely be equal to most of the top dome tweeters. Overall, what this speaker does incredibly well is create a fast, real bass and adds the spaciousness of an open baffle mid. It is a real winner.