Martin Retro Monel Strings (light / .012-.054)

I choose to put Monel strings on guitars that I either don't play much and that stay in their case for long periods of time as the strings don't corrode and lose their tone and ability to stay in tune, or for instance on my Roy Noble guitar that I wish to lesson string squeaks and as well reduce it's abundant overtones if I use this particular instrument in a busy recording. Monel strings last a very long time in my experience and I've never had one break on me.