Although I'm a bass player, I do own several guitars. And, like my basses, they're all strung with Rotosound strings. I like the gritty kind of feel the strings have, while still maintaining a clear and vibrant sound. The grit factor is very personal, of course. If you like your string action buttery smooth, these are not the strings for you.
Two other things I really like about these strings are:
1. They come colour coded, which makes putting them on a piece of cake, and 2. Rotosound gives you an extra high E string. Which is just smart thinking, cause it's the string you're most likely to break.
All in all, just a very nice and affordable set of strings. Do recommend.