Thanks for the comment KHS.
Hey Rob - Aquila has sets that are close to equal tension but none that I know of that are marketed as such. I wanted to find a plain nylon solution to the problem anyways and most of Aquila's sets are nylgut and their variants.
At the end of the day, however, I prefer something other than plain nylon. At the moment I have a set of Aquila Alabastro's on this guitar tuned to A=435Hz. I'm really liking those - recordings forthcoming
"One should always eat muffins quite calmly. It is the only way to eat them."