I've enjoyed Martin FX 80/20 lights and/or mediums (when I had a GS8). They're kind of gritty sounding...and are the strings Tommy Emmanuel uses. They don't last that long because they're uncoated/undtreated, but Martin does have a Clear Tone treated string called Life Spans. They're cheaper than Elixirs, and "treated," rather than coated, and I would say they last about 3/4 as long as the Elixirs. I feel like their tone is pretty bright though, which works on their deeply toned martin dreads, so maybe they'd work well on the revoiced Taylor 8's. They're worth a try if you want to try a treated string that isn't Elixir, though. I always revert to the Elixirs when I'm trying to record a song and want to avoid finger squeaks, I'll even go Polyweb because the coating seems thicker than the nano, for that purpose. Oh, and for some reason I just can't cotton the PB's...I just prefer the 80/20's. They seem to have more girth of tone (lower lows and higher highs) to me while the PB's seem compressed...