Elixir gets those who care about their strings talking. If you get sweaty hands while you're playing, then just stop reading now and buy some. If not, like me...
Strings are like green tea: a little buys a lot. But coated strings DO affect your tone. Somehow they sound more hi-fi. Hence on my Chapman and Ibanez guitars (and my Ibanez bass) coated doesn't really matter, because this style of guitar is hi-tech anyway. I think my Chapman was shipped from Thomann with Elixirs and as is the case with Rob's guitars, they sound great. And even though it was designed in the mid- late-eighties, to my ears the Jem still sounds as though it comes from the future. So in these cases it doesn't matter much.
I've used Ernie Ball strings pretty much for thirty years now, and while they coat some of theirs, the original Slinkys seem that bit more "soulful." Also Gibson's Nickel strings are pretty stunning. And you can't beat stainless steel on a proper Tele. And what did Jimi use? What does Guthrie use? Rotosounds. Very cheap.
All the same, Elixirs DO sound good for longer, probably in excess of what they say in the adverts, actually, which in this age of hyperbole can't be bad! Somehow they seem to break less as well.
I'd not put Elixirs on my EJ Strat, but that's not what that sound is about. I can more-or-less guarantee that the Nanowebs will last longer than three sets of normal strings, which is why I'm giving them four stars. If you've got a workhorse guitar that you play every day for a few hours, then it's a no-brainer at least to try them out.
Elixir promises a lot with their Optiweb range but I haven't tried them yet. I'll let you know. In the meantime give these a shot perhaps. What's the worst that could happen?