Bought these in a bulk deal (12 pack) was I have quite a few guitars. I have used all the main brands over the years - D'addario, Fender, Gibson, Ernie Ball, Rotosound, Elixir etc. Outside of coated strings, there is such little difference in the other nickle-wound strings (gauge not-withstanding) IMHO.
The heavy bass strings mean you can really gig in when playing rhythm, especially on shorter scale guitars. While still getting an easy bends and vibrato on the plain strings.
The longevity seems to be the same as all the other brands I've usdd over the years, I don't have overly sweaty hands, and dependant on use will get 6 weeks to 2 months out of a set. Works out at around £20 per year at Thomman bulk prices!