Well, now I just feel silly,
The 20 Hz low frequency extension, dynamic capabilities and low distortion of the M2 sounds like something out of this world. Was talking with my brother (who has Model 19) about your review this morning and we both agree that it's insane what JBL has pulled off with this fairly compact two way speaker, and we've decided we'll be going to Oslo together to get a demo – which shouldn't induce the usual fight of being in the sweetspot
Yes, now it's a matter of which and when, not if.