Yikes. I think you should try to get your ears on at least one variant of the Song 3 or the SCM 19. They are very different in presentation. Personally, I prefer the ATC stuff. The SCM 19 I guess can be said to have a "British" kind of sound with a bit of midbass punch, full bodied mids with a BBC dip (2-3kHz), and some sizzle if listened to head-on. The trick is to angle them so they are off-axis by just a slightly bit. I also like the sound of the more traditional silk domes and sticky paper of the ATCs. While I haven't heard the entire Song 3 line, the ones I have with the 7.5 Satori woofer all sound lean, and to my ears desperately need a subwoofer. Subjectivity, I hear a lack of any real bass below say 60Hz, and any bass that I do hear below 90Hz is of poor quality. I'd rather take the SCM19 which doesn't have the bass extension "specs", but actually has real usable bass to those specs which are indicate. I know the specs of the Song 3 variants (with the 7.5 woofers) say they go down to 33Hz, but that's kind of bullshit. I know where that came from. The Satori datasheet says that extension down to 33Hz is possible with a certain cabinet size and port tuning. This is true depending upon how one looks at things. This a model of the specific tuning of the Satori for the "33Hz" extension. The box would be 33l with a port tuning of 32.5Hz. The -3db point is 38Hz, not 33Hz. However, the bigger deal-breaker to me is that this looks more like an EBS (extended bass shelf) alignment which tends to sound leaner and less punchy than a say a quasi-butterworth alignment, which has much less extension, but IMO, better sounding bass that keeps steadier until it more suddenly drops. See below for such an alignment (darker green line) compared to what I suspect is what the Song 3 implements (light green). If you can't tell already, I'm not a fan of EBS alignments, well at least not with small woofers. With 15" to 18" woofers, EBS can work. I'll give you my two cents on the AT drivers. I think I am the one who might have said that. To be continued.