Alright, motherbitch. I come into threads like this just once in a blue moon, so take heed to these words.
The album "Unia" by Sonata Arctica.
It's an album so bold and different that it pretty much shook their fanbase irreparably. The second half of the album is particularly what I recommend.
I know my username is a homage to the band, but I made it years ago and I don't really even listen to them anymore. I would even say I dislike a good amount of their stuff.
But I can say without the shackles of fanboyism Unia has some of the greatest progressive metal that there is.
Oh, and if you can, get the bones track "They Follow". Sonata Arctica is a band that has a lot of bonus tracks that you hear and just think, "Wow, I see why that didn't make the album. It's shit." But They Follow is better than some of the earlier tracks on the album.
I guarantee you will not regret it.