What can I say about strings?
The Rotosound R10 are great sounding strings. They are not to bright, like steel strings.
Nickelwound strings sound warmer and fuller, that is the reason why i play Nickelwounds on all my guitars.
Besides the sound, they feel great. I don´t like coated strings, because they always feel ... let me say wrong. So i prefere to change my strings more often but have great sounding and feeling strings. Because of that, the string sets shouldn´t be too expensive.
The price of the Rotosound R10 ist ok, and there is always a second high e string, in case emergency ;-)
On a few of my guitars i play D´addario strings (my fovorite strings) but they have coloured ball ends, and that looks not right on my Les Paul because i wrap the strings aroud the Stoptail... but the Rotosound R10 are a great compromise for me.