It took me three goes before I was in the mood, but have finally listened to the Bax which I enjoyed with the (ever trustworthy) Maggini Quartet. He certainly seems to know his way around a string quartet, and everything seemed to dance freely or languish opulently as mood required. There's a melody in the central section of the last movement that sounds so like a yearning Irish ballad, a string quartet response to Danny Boy, and I remembered he had a fascination with Ireland. I checked and saw also that it was written in 1918, but personally found it generally light-hearted and didn't detect any echoes of the background of WWI.
Actually I listened to the 2nd quartet at first by mistake () and found that a more reflective and excursive kind of piece, but also enjoyed.
Anyway, nice choice, BA LXX (take out the middle two letters of your acronym and it looks like a familiar name ..), glad I got to hear it.
Am struggling a bit to keep up with the quartets, but hope to get round to each of them eventually.