Doesn't that also depend on string gauge. Aerosonic @27 lbs will feel and play higher and tighter than BG65 @32 lbs...
I'm not so sure it's even gauge, just the coating and string feel. BG80 feels harder to me at 27 than No.1 did at 30.
@dbswansea @visor Well BG 80 at 27 actually made my left arm a bit sore the first day after I restrung it, but thankfully the tension dropped on it a little and now it's more manageable.
None of my customers is that type who is after Aerosonic. Normally I string for over 90% of my customers from 0.68 to 0.70 and most of them choose BG65 or go for BG65TI, BG80, BG80P or NBG99. Just my XD partner go for No.1 and my MD partner for BG66UM because they know that their rackets are at the same priority as mine in the queue.