Alain.
They do not last as long as a set of coated strings, even though the 1st & 2nd are Brass plated. If you have acidic perspiration, you must absolutely clean and re-lube your strings after every playing session, lest they rust in no time flat.
Having said that, these strings are perfectly balanced. I have sets on my 63 jazzmaster, my early AS-120 ibanez and one of my Les Pauls. If you take good care of your strings and you have not tried a set of JS111's, these strings will certainly satisfy your curiosity and bring your vintage staggered single coils to life. They're even better on JM pickups and on humbuckers they are very sweet.
Excellent soft feel.
Relatively narrow gage and tension range (11-47) from high to low E.
Top Quality - Long lasting.
Cool violin-string like red wrap around the tuning key end of the wound strings.
Expensive, but worth it to me.
I like picturing the craftswomen in their Vienna loft carefully creating these strings, as if for Mozart. ;-)
I've experimented with other, less costly, flat wounds, but Thomastiks are the standard of comparison. As the archtop collection grows, so does my appreciation for the quality of Thomastik strings.
Great service from Juststrings !
When I pair this set up with my ES 165, I very seldom have to fine tune my guitar.
For a Jazz player that needs to use a lighter gauge strings (.011), these are highly recommended. The feel and tone are exceptional.