Rotosound R10

As a professional guitar player, over the years I've tried an endless amount of different guitar string-brands. I've come to find that the Rotosound electric guitar strings are the ones that have the right balance between fresh sound and longevity and are simply my brand of guitar strings. That being said this, of course, differs from player to player and it all depends on your expectations from your guitar strings. If you're into the British sounding 60s music these are likely to fit you.
Of course, Rotosound make all the standard string-sizes for all the standard string-instruments. I can recommend these to players of all levels and think Rotosound make great guitar strings, plain and simple.

I love the sound of these strings. They start out pretty bright and zingy but they soon mellow out to a very nice, mid focused tone.

My only complaint is that they seem to be made from more brittle steel than most other strings. They do NOT like to be loosened (like for a setup) and then brought back up to tension. I often experience breakage in situations like that. I guess that's why Rotosound provide an extra high E-string.

I've actually experienced the same with Rotosound BASS stings which strongly suggests that Rotosound use a more brittle type of steel than other string manufacturers. I mean, bass strings should be able to handle being loosened and brought up to tension. With Rotos they often break.

Still, the tone is great and they're cheap. I'll definitely keep using them, at least on SOME of my guitars.

The strings are nickel-coated steel, and they sound quite good and mellow when they are new.
However, the quality of the latest production is questionable. The set comes with an extra high-E string, and it was needed straight away. The high-E string installed first broke during the procedure of intonating the guitar, and it was not due to the bridge, nut or tuning machine - the string broke in the middle, somewhere around the forth fret.
Also, the strings corrode quite heavily in comparison to some other I have used.
When I used this strings previously, over a year ago, they used to be of a better quality, so it may be that I was unlucky just with the latest set.