Heavy bands with good vocals suggestions

[GalacticCowboy]

Anyone know any bands that make heavy music, but also have really good clean vocals? I can't stand the typical screamy/growly stuff. I like harmonizing vocals a lot.

Example:

https://www.youtube.com/watch?v=34OASgsyHVI&user=B5Erik

https://www.youtube.com/watch?v=g4iofFRAjok&user=Galactic Cowboys - Topic

These songs aren't really super heavy, but they're good examples of what I'm looking for.

I'm just really picky. lol