so i always use Medium gauge Martins for my acoustic...but i think there too mellow and i like the bright tone....

what strings have a bright tone that lasts??
CT Musicians

"Rebellion happens in the mind, you cant create it, you just are that way" - SLC Punk!
I've found Elixirs have a nice, bright sound and of course lasts a long time. But I'm sure there's better out there.
d'adario has one of the brightest tones. but the altogether best sound string is dunlop. there bright and balenced. warn, deep, ful, and have an amazing tone.you should go with them
I concur with Elixirs.

Partscaster/Tele into a bunch of pedals, a Maz 18 head, and a Z Best cab.
Try Phosphor Bronze Strings for a brighter tone. I prefer martin strings to all others. Try the sp 4000 strings. You might have to order them on line from a place like Elderly Music which seems to be about as cheap as anyone.