Biased toward Demetori stuff
Their main stuff is metal, the instrumental kind and they do it good.
However, their acoustic is equally good:
Otherwise, I'd suggest WAVE. They touch on diverse genres but their most oustanding efforts are in the chorus + orchestral style, case in point, Yamaxanadu's theme:
Their take on Yuyuko's theme, Border of Life, is
E.P.I.C.
Another circle to look for is =Neutral=
A great remix of Tenshi Hinanai's theme