Martin 170 80/20 Bronze Acoustic Guitar Strings Extra Lightstar rating 5Joe SasserMay 18, 2010I was first introduced to these strings by a good friend over 25 years ago (hard to believe it's been that long). These are the standard strings for my '73 Gibson Southern Jumbo Deluxe, and they deliver constant, beautiful tone which records beautifully. Only wish they laster longer, and were available as a set of .09s. But at these prices, I'm able to keep them on hand for any occasion. Best string, best price, friendly people, fast shipping. What more can I say?