On that $80 classical I used to play these strings all the way to the point where the wound basses would begin to fray, and then I'd have to scrounge up another $5 somewhere as soon as possible for new strings. This was back in 1974. (Just letting you know that I'd play them all the way to their very end, and they sounded fine and were really settled in at that point, despite the bass strings having lost their shiny golden appearance toward the end.)
I liked them from the start because the treble golden nylon strings looked so good compared to the clear nylon strings my classical guitar had come with, and the polished bass strings had smooth hand shifting with minimum finger squeak, especially after the strings had been on for a week and had been worked over by my playing. They're really warm sounding strings, too. Very lush. Sonorous. I tried, a couple of times, other brands of strings, but once you get used to the appearance of the Golden Superiors, you're spoiled for life. So, I've always come back to these. They're all I buy now.
Around ten years ago I opened a package of these strings, and where the coils of the wound strings touched, slight corrosion could be seen. I contacted La Bella and asked whomever (maybe the owner) what was up, could I buy from La Bella direct to get them as new as possible, because these strings had always been so shiny-golden right out of the package, as I had remembered. He explained that they used to use NaOH as a post production step, to remove any corrosion and shine them up before packaging, but had to stop because of OSHA restrictions and cost control. (something like this)
Recently, the last package I opened which had been in my possession unopened for around a year, revealed a special anti-tarnish inner-plastic packaging, and when I finally got to the paper sleeves for each bass string they were beautiful, shiny-golden, perfect strings, just like I had remembered from my teenage years.
You will love these strings. They're great!