Well, I listen to Blind Guardian mostly. If anyone has a band that has a similar sound ( they seem Folk and Smphonic metal in one IMO ) please tell me XD
Out of the genre tho, I like the classical stuff ( Metalica, Judas Priest, Iron Maiden and other old bands )
If you're a fan of Blind Guardian, then I assume you're familiar with Demons & Wizards and Iced Earth. If not, D&W is basically a side project, a crossover of BG and IE, with Hansi Kursch on vocals of course and Jon Schaeffer on guitar. Iced Earth's stuff from the 90s is mostly really good, Iron Maiden-influenced power metal, although I don't like much that Schaeffer has done in the last decade and haven't kept up with them. Ripper Owens was in Iced Earth for a few years, and recorded at least 1 album with them.
Pyramaze also did an album called "Immortal" with Iced Earth's former singer, Matt Barlow, which is a good listen. I haven't heard their other albums.
And, not sure what your experience is with melodic death metal bands, and harsher vocal styles but there's a lot out there worth checking out. A lot of those bands are heavily influenced by 80's power metal, but there's not much folk influence there.