I keep coming back to D'Addario J16s on my primary guitar - Collings 000. Frankly I do not much like the tinny sound of new strings - how fortunate for me - so strings last quite a while. I play with mushy old fingertips anyway, and I think that masks the fact that the strings are somewhat dead most ofd the time. I do use Elixirs on my 12 string and other guitars simply because I do not play them as much, so I do not have to spend my life changing strings. BTW, DR Rare strings last quite a long time, and sound about a "week old" when first put on the guitar.

dw