I have 2 Nylon strung guitars, one which has it's roots in 'East Germany' and was aquired when i was 11yrs old, lets see, thats erm... well lets say i got it in 1976 and its still going strong on it's original set of strings.
The 2nd i got last year a Francisco Bros B24 i got off ebay, not very old and still on its original set, so i know naff all about nylon strings, but the Bronzers always look good.