My 2 cents: Outer limits - I like the music but the vocals are horrid. Gerard - great musicians but compositionally kind of simple.
Some of my favorites:
Providence - And I'll Recite an Old Myth. Great late 80's prog
Happy Family - 1st album totally kicks ass
Kenso - several titles
Mongol - Doppler 444. Like Kenso with some Magma influence on the last track
Motoi Sakuraba - Gikyokuonsou. Great keyboardist, also has done several video game soundtracks
Bellaphon - Firefly. Good Camel-ish instrumental prog
Vienna - Step Into.. Late 80's prog with the original Gerard singer/guitarist and the Outer Limits keyboardist.
Kitaro - his early late 70's and early 80's titles where he used all analog equipment are quite nice electronic music albums, before he got into a newage formulaic rut.