Trying to decide between a esp ltd ec 256 and a Yamaha revstar 320. I haven't played the esp but hear a lot of good things about it. Played the Yamaha and it is awesome guitar for it's price. Only concern with the Yamaha is it is built using nato wood. It sounds good but would it be a worthy investment as I am looking to upgrade the pick ups down the line? Any help would be greatly appreciated!