My 3 favorite strings happen to be carbon (D'addario), nylon (D'addario), and carbon-nylon blend (Dogal.) I think the EJ46FF are my favorites on my particular guitar, we'll see. But I really came here to type out an anecdote.
Gather 'round, wee ones, and I'll tell you a story.
Once, long ago, a friend wanted to buy a really nice steel-string. Not wanting to go about it half-way, he bought rather a lot of high-end guitars on approval . . . so many that one management guy here in Vancouver got a call from HQ back east congratulating him on the sales, but he hadn't sold any of these guitars, it was just this one guy and a credit card. (My friend is no longer welcome at that particular location, go figure.)
Anyway we got together with a mutual friend and had a massive shootout with the new guitars as well as our own, ranging from my Yamaha LL16 (about $900 new, but an abnormally good guitar for the money) to our mutual friend's Martin Marquis ($4500 list, I think he paid $3800, absolutely the best steel-string I've ever played.) I don't recall exactly but there were multiple Larrivees, Martins and Taylors everywhere.
So we spent an evening thusly: one guy (the prospective buyer) on the couch with a blindfold (well an imaginary blindfold, we were on the honor system,) me in a chair playing the same short riff on every guitar ("Nutshell" from AIC) and a third guy passing me guitars and keeping notes.
It was a humbling experience . . . I mean the way guitarists talk you'd think we could pick out a cedar top or mahogany B&S on a landing strip a mile away, but we can't. There are just too many variables. Sometimes I knew which guitar I was playing (I didn't look either) but not always. My buddy has good ears and the differences are real, he did much better than chance, but the main tool we use to distinguish one guitar from another is our eyes. He could usually tell which was which if they were in pairs, but it would sometimes take a couple of tries. I will say the guitars had the characteristics we thought they did, and he wound up buying the guitar he'd been thinking of (a Martin HD-28) but that certainty, the idea that minor differences are completely obvious, gets stripped away pretty quickly in a situation like that.
Verily I say to you, people around here would be a lot less opinionated if we were stuck using only our ears.