D'Addario Acoustic Guitar Phosphor Bronze, 5 single strings, .029, PB029

After trying & testing all of the all of the big name manufacturers of strings, D'Addario is clearly the best sounding string of them all (including the steel strings), hands down. Only other phosphor bronze I use now, on the E & A bass strings, would be the Ernie Ball which gives you a slightly darker tone w/ less attack & top, which is sometimes desirable.

The only way to know for sure is spend the money and do your own tests, but it costs you to do so. For me it was well worth a few hundred dollars to find out for my own ears.