In no particular order:
Albums I've purchased:
Thoughts Factory / Elements
The Night Flight Orchestra / Aeromatic
Harem Scarem / Change the World
The Unity / Pride
Ad Infinitum / Chapter 1: Monarchy
Confess / Burn 'em All
Nightwish / Human || Nature
Exlibris / Shadowrise
Albums I've only saved in Spotify for the moment:
Starmen / Welcome to My World
Diabulus In Musica / Euphonic Entropy
H.E.A.T. / H.E.A.T. II
Conception / State of Deception
Pure Reason Revolution / Eupnea
Cryptex / Once Upon a Time
Green Carnation / Leaves of Yesteryear
Katy (boy, that was a sweet iPad typo autocorrect!
), Give Exlibris a try. Just a short 6-track EP.