PRS Man didn't really say what his dis-satisfaction stemmed from, though we might guess first tonal loss. He did mention switching between various light strings.
Players that are vigorous can always benefit from heavier guage (though that also generally needs set-up adjutment). It can solve breakage problems (not mentioned except in responses) but does nothing for the maintenance of the strings per skin oils, or wear from playing, etc.
I've a more basic suggestion.
You're playing an elctric guitar, I presume.
WHY are you "beating on the strings" ?!
Many players, especially the less time they've played or if coming from the acoustic guitar world, have the idea that hard strumming equates with louder or with intensity & power.
That's all out the window when playing electric, however. In fact playing too hard can lessen the dramatic power of your playing & even cause you to go out of tune, especially on note attacks.
It's a freaking electronic instrument connected to an amplifier !!
You don't need to play hard to be loud or to have dramatic power.
Most electric guitars, in fact, respond better when played with physical restraint.
That in itself may be the best solution.