For me, it's probably The Deal. Such a lot of concentrated win. Also Diplomats and Arbiter, the former of which I did in musical theatre class at my acting summer school many years ago
Danish Tour Cast is my preferred recording for completeness and cast. Not quite so 80s but eh, Zubin Varla's existence makes up for that <3
It's probably the musical I most want to direct actually, even more than Les Mis.