Lately I've been listening a lot to Symphony X, their latest album has a lot of cool melodies but really can't get over the divine wings of tragedy
Arch Enemy have written some of the most beautiful melodic guitars that you can find I think, and Nightwish caused me to start studying music in the first place, but I've also discovered a lot of Italian bands since I moved here from Finland. The melodic/prog scene doesn't get that much attention up North so it was a pleasant surprise to hear groups like Ancient Bards and DGM!