I've used nothing but d'Addarios on my Framus for quite a few years.

Last time I had a string break, it was a B, which I had managed to kink while installing it.

Haven't lost an E in twenty five years at least, and I don't change them as often as I should.

They are expensive, but better tone and value than Martins. Of course that is on MY guitar. Others' mileage may vary.

Don T.