Never have I had strings last more than a week.. Frustrating as hell.. I was told about the polyweb strings and tried them.. 6 weeks later they are still as new.. I am very impressed! I will be using them from now on on all my guitars and I highly recommend them if you have a high acidity or live in humid conditions.. I have both! They are slightly warmer in tone but hey just notch up your tone knob a little and you wont know the difference..Cant recommend them enough..Thank you Elixir for finally filling the much needed product.