If you ask me to pick the most durable acoustic guitar string, Elixir will definitely be my answer to you. These strings give bright and lively tone. They used ultra thin nanoweb coating which make them different from other traditional 80/20 bronze strings. They are designed to handle any toughest strumming.
Nanoweb coating actually cuts down unnecessary finger friction. It will keep strings last 3 – 5 time longer than regular strings. In other words, these are strings which you could count on their durability. You will see the quality yourself once you have them on your guitar. The difference will be dramatic – it will make your guitar sound completely different and totally awesome.
You gotta buy these strings!