I'm not too keen on Neptune Towers. It's spacey, but inferior in its spaciness to Krautrock, so why bother? 'Electric Doom Synthesis' is one of the shittest albums that I have ever heard. It's dance music done poorly by black metal nerds. I wouldn't wipe my arse with it.
Angelo Badalamenti blows these pseuds away in the Mulholland Drive soundtrack. The track 'Diner' is the kind of stuff 'ambient metallers' will like. I've listened to the KCUF ambient shows and with the exception of Burzum's stuff, which I've already heard, I don't seem to like ambient as a genre. It's best done in snippets by film composers (Morricone, etc) and by metal bands (Burzum's stuff, track 26 of Fantomas's first album, etc). Basically, ambient is good when an artist has a clearly-defined picture of what sense he wants to express. The aforementioned turkeys sound like aimless knob-twiddling, which is why they sound shit.