I use normal tension nylon D'Addario EJ45's: fine neutral sound; consistent quality; easy on the pocket book; easy on the fingers. They have a nice soft feel that allows me to play longer and cleaner without hand fatigue, a quality I value as I get older. Though they won't amp up a guitar like carbons or high-tensions might, I find they produce a solid, sweet tone on most guitars that are well-balanced and not in need of "help" from more high-octane strings. When asked why he uses EJ45's, David Russell once replied that first and foremost, strings should be easy to play and make him sound good, not just the guitar.
2010 Andres Marvi (cedar/Madagascar rosewood)
2019 Michael Cadiz (spruce/ziricote)
"...beware of all enterprises that require new clothes..." -- H.D. Thoreau