These things last for ages!
I put these strings on an all mahogany acoustic, a Guild - you can feel they are very good quality, and they resonate very well - really great for finger picking and also for bends, the sound is very full. I play quite often and although I don't change strings religiously these have lasted rather longer than usual - I almost didn't want to change them they sounded that nice. As I like to experiment with a few different types, I will try something else to compare, but I have no negative feedback and I would definitely return to them without a doubt.
So if you look for something a little bit different from the phosphor bronze I'm sure you will not be disappointed. Excellent service as always!