I swiched to Cleartones some time ago. Elixirs are ok but I didn't like the slimey feel of the polywebs, plus at the time the top strings weren't treated.
I went back to Elixir Nanos (less slimey!) when I couldn't get Cleartones - Elixirs are well marketed and sell well whereas Cleartones effectively priced themselves out of the market, at least locally.
Now however I'm using Martin Lifespans, which use Cleartone process. I am very happy with them, and probably staying with them. Nice feel, last ages and sound great.