Great for bending
I use 10's on most of my guitars, but when I want to do some serious bending, I always end up using
one of my Telecasters or Stratocasters with these 9's installed.
These are what is supplied on a lot of the new Fender guitars you get.
While 9's on other guitars (like LP's) does help in bending, I just get better results out of the Tele/Strats.
Now if your Eric Clapton, or play guitar for a living, you probably use 10's as you do this all the time.
I am a professional drummer, not guitar player, so I need help when attempting this task.
I also find that I will not break as many strings on a Fender Barrel bridge.