Oh yeah... I definitely dig ambient, psytrance, downtempo, etc. You don't really have to deal with negative stuff like with metal; there's definitely the drug element, but once you get past the corny samples about LSD or UFOs it's great stuff!
Infected Mushroom... excellent group, I have a couple of theirs.

I haven't heard any of the other artists you mention, but I'll have to see what I can dig up!
I would highly,
highly recommend the album
Are You Shpongled? by
Shpongle. (Their other album is good too...) This is one of my absolute favorite albums, it's masterfully done from start to finish. Not really trancey, there's some really killer drum programming though and some great ethnic samples...
From my experience, you can't really go wrong with anything on the TIPWorld or Twisted labels-- some of their compilations are absolutely amazing. My favorites are the two
Thirteen Crystal Skulls albums,
Mystery of the Yeti Part 2 and
Eclipse: A Journey of Permanence and Impermanence.
How about beatless ambient music, are you into that at all? If so, I'd have to echo Cygnus's post-- Steve Hillage and Tangerine Dream both have some excellent chillout music of the deep-space variety...
If you want any other suggestions for further listening give a holler; I'm off to go find Entheogenic and the Akasha Project!
