Tried the basses of this package until they had worn out. First impression was really quite astonishing: very bright and open bass tone for such a low price. On a more close listen I had to admit that they also lack a bit of deep bass, but nevertheless I still liked their tonal balance as they were.
Secondly, despite being coated, the tone wore out a lot more quickly than I'd hoped for, almost as if they were not coated. Not being an extremely regular player on my classic guitar, these basses lost their brightness in just a few weeks.
Third thing that was interesting, is the D string that needs a very long time to stabilise and stay in tune. I now put my favourite d'Addario's back on and these needed 3 days to be totally ready for a concert.
4th thing - that astonished me a bit to be honest - was that the A string snapped overnight (just a few days before a concert). This is something that hasn't happened to me in ages anymore. So this tells us something about the strength of the core, and to me at this moment this feature is just that bit too low quality to trust them as my regular set of strings.
That said, I still think they are a lot of bang for the bucks and the low price must show somewhere. For now I'll stick to my known (and much more expensive) d'Addarios but I do hope and encourage Harley Benton to evolve and improve their strings so they mature to a trustworthy, full quality product.