Just put on the 89U reds on my baritone. Hate 'em. The E string broke while stringing, luckily there was enough left to string it. Really kind of pissed me off a bit as I was hoping the reds sounded a bit like their old "before New Nylgut" set. I wrote Mimmo and also a US distributor. The US distributor said not to expect an answer from Aquila in Italy. Course I just wrote today so didn't expect an answer, but to hear stuff that M. wouldn't write back was not what I was expecting to hear.
So, the search is back on, may pick up a set of 21u's to see if they are the same that's on the bari. now and perhaps start looking for a different set with stiff 1&2's with wound 3&4. 20 bucks down the tubes as Elderly doesn't return strings; which I understand.