So thanks to DTF I have definitely discovered the following:
Progressive Metal
Seventh Wonder - Mercy Falls (thanks Tomislav )
Circus Maximus - Nine
Native Construct - Quiet World
Prog Rock
The Dear Hunter - Act IV: Rebirth in Reprise
Metal
Insomnium - Winter's Gate
Agalloch - Marrow of the Spirit/The Mantle
Vektor - Terminal Redux
Quiet World is great and one of the stand out albums on this list.
Hard to know what someone else's radar picks up or not, but I'll drop an honourable mention to:
Earthside - A Dream in Static
Metal. Maybe prog metal, who knows. Genres are pretty much useless anyway.
Here's a link to Spotify, for those who use it:
https://open.spotify.com/album/6rTrPk4lcLGVvqUpLTSko0
This Earthside album is also amazing and an unbelievably strong debut (just like Quiet World actually).
As for me, I'd probably add:
Artificial Language - The Observer (thanks Train of Naught for pimping this)
Astronoid - Air
Black Crown Initiate - Selves We Cannot Forget
Children of Nova - The Complexity of Light
Chthonic - Bu-Tik
Crippled Black Phoenix - Bronze
The Hirsch Effekt - Any/all of their albums
Ihsahn - Arktis
Mandroid Echostar - Coral Throne
Megosh - Apostasy
Oceans of Slumber - Winter
Odd Logic - Penny for Your Thoughts/Effigy
The Ongoing Concept - Handmade
Pressure Points - False Lights
RX Bandits - Gemini, Her Majesty
Shining - International Black Jazz Society
Thy Catafalque - Meta
Most of these bands/albums were discovered via DTF and that is why I will never leave