You might want to try the new "cobalt" strings. They are advertized to be more powerful and clear sounding. I found them to be louder and very nice. They made such a big difference in sound and tone that they reminded me of the difference you notice when you put some good new pickups in a guitar. I definitely like them. Whether they last longer I don't know but they do have a different sound them that some may find useful.

I still use D'darrio nines and tens, and Slinkys. The "cobalts" are just another option.