D'Addario is the most popular string brand and produces these balanced tension sets. A few other brands may produce balanced tension sets but they may be few. As far as I know, only D'Addario makes them.
I find these sets very good; for the equal feel when playing between each string and I think it's easier on the neck and truss rod since the tension is distributed equally.
I, personally, use these 9s for standard tuning on a 25.5" scale guitar. I don't think I will go for 10s as the tension would obviously increase resulting in a faster attack and release and a longer sustain (I like medium sustain, attack and release). Also, obviously more tension on the neck and truss rod.
And I forgot to mention bending is easier with medium tension strings.
The only qualm with these strings is that perhaps they don't last so long, especially the wound ones with nickel. It gets oxidized very quickly. Some reviewers around the world complain about this and talk about other brands that make longer-lasting strings.
Of course it depends on how much one plays, the sweat from the fingers, if the strings are wiped after each use, environmental conditions, etc.
But, overall, they're still the most popular strings in the world and I'm glad they make these balanced tension sets.
