I recommend either the Martin Phosphor strings for acoustic, Ernie Ball acoustic, or the Dean Markley Blue Steel acoustic. If you are breaking strings a lot, go to a heavier gauge, like the Blue Steel Mediums. Also make sure that your bridge is locked down correctly, any minor slippage can cause a snap, and ensure the nut is free of sharp edges. I went through 4 sets of Ernie Ball Bass Strings (25 bucks a set) before I realized that the nut on my Ibanez had a REAL sharp edge on it, probably from all the abuse it took.