shane b. uses:
Breedlove sd20 focus dread: Sitka spruce top with rosewood back and sides, prefix pro pickup by fishman
Breedlove sd20 focus dread: Bearclaw Spruce top with rosewood back and sides, same pickup system
Martin J-40 (This model has been discontinued since 80's)
everett uses a composite by CA guitars.
and the shanes are endorsed by Gibson, so they're probably using them here and there.
check out
www.shanebweb.com for stuff like this. that's where i got this from.