I'm using these strings with the Harley Benton GS-mini-e guitar (spruce top) and they make a great pairing as this give the guitar more bass and sweetness at the top end.
I also tried this with a mahogany body guitar and they still sounded great but lost a bit of treble - nothing to do with the strings of course - those mahogany bodied guitars will be warmer sounding guitars anyway.
I can't imagine them sounding anything but gorgeous on a more expensive guitar.
The wound G-string did snap at the tuner hole after changing tunings a few too many times but that was my fault. Maybe something to keep in mind if you constantly change the tunings of your guitar.
They are made in Mexico.