I have an acoustic nylon with standard nylon, hand-made in 2003 without string change, the strings are rusty but sound really good for blues it's really good, plus they don't got any UV damage so i can describe it as a perfect bluesy sound like lightnin' hopkins or robert johnson, thats why i loved that guitar when i got it by a cousin that never touched on it, i usually play it to practice and avoid to use my electric one, because i use electric just like an 1 hour and the rest is acoustic like 2 or more hours, the height is very high for slide and tension the same i think it's like 2 times harder to play than electric because of tension, a good way to practice bends but vibratos are hard to do but i'm getting better with vibratos cause its harder now to execute it.