Armando Corea did some really tasty work in Circle. Check out Circling In, Circulus, Early Circle, ARC. Also pretty nice as a sideman with Bobby Hutcherson, and Miles, too. Duet ECM record with Gary Burton,Xtal Silence and the associated box set. I agree that some of his output is pretty awful.
Hey here's a link to a pretty nice guitar/oud player
got a chance to see him in solo w/bass player. Very enjoyable stuff, adventurous but lyrical