I'm in love with Harley Benton products and after spending money on gear for 10+ years, I think I can easily understand what's valuable and what's cash grab. I have 3 Harley Benton guitars which I absolutely love, HB wireless transmitter and a lot of guitar products but none of them was this bad.
It's getting dark only after 1-2 hours of playing and I saw that it rusts so bad after a couple of days, I've never saw that amount of rust on a string before.
I'm using the cheaper Harley Benton strings on my Fusion III EB OCT and I must say it's much better than this even it's cheaper. Something really wrong with this strings.