Re OES tour, I think that it shows how professional and capable a band that they were at that time that they were able to carry on and proceed to deliver a quality performance. But if you listen to recordings those earlier in the tour have more 'vibes' and energy, like Munich 1991 compared with the later 1992 shows which just feel like delivery of a well rehearsed performance to me. Poles apart from BIA tour which actually was not as polished musically in places (think BIA...) however just sounded warmer and full of good energy. All to my ears of course.
Interesting take. To me, the
Brothers in Arms tour -- as great as the performances obviously were -- had a very "80s" sound (not surprising) which already felt awkward to me when I first heard it as a teenager in the early 90s. Whereas the 1991/1992 sound was a big step away from that -- not in the direction of what was to come in the 90s (Grunge, Britpop etc.), but uniquely well-rounded, full, polished and, yes, warm. It had a lot to do with the pedal steel and Mark's Pensa, I guess. In terms of sound, my favourite Dire Straits tours are the very first one and the very last one.