After using daddario's 85/15 american bronze strings for an year i hv decided to experiment some strings on my yamaha acoustic i came across 80/20 bronze bt i heard dat it has very short life abt 2-3 weeks max n i also dont want to buy its EXP version coz its expensive n i usually change my strings in 2-3 months i also came across Phosphorus Bronze which has long life..........so any of u hving experience with dese strings plz feedback PS: n yes m die-hard Daddario fan