I use these strings with my Fender MIM Classic 70's, and really they produce nice sound, and seem pretty strong.
I had them on for the past 2 weeks, and I think they are about ready for a replacement. First and second strings lost the nickel plating over several frets, where I bend the most. They don't sound as clear as a week ago. It's more or less in line with any other 9's in the same price range. They did endure a lot of abuse, didn't break any of them yet.
- great sound in the first week or a bit longer (depending on your style of playing)
- color coded ball ends
- Nothing special, would like the tone to last a bit longer.
Maybe I'm asking too much from a set of strings that cost less than 5€.
I'll be trying Pyramids pure nickel round wound 9's, they do market them as "Long lasting", they are made in Germany and cost less... so we'll see.