Years ago I bought a new Snowbee Xs line after trying one. The running line started to crack after three outings, so Snowbee replaced it . After that I treated it regularly with Snowbee stuff, but eventually (after two years or so) the problem reoccurred so I forgot about it and reverted to much cheaper lines. So, now we can buy a Sunray with excellent reports, but having a nano running line, will it eventually suffer the original Xs defects. Users comments eagerly awaited.