Am I right in thinking that either of the first two albums is the best place to start?
that's where I started, and stopped. Both well worth your time, but start with Ultraworld then go to U.F.Orb. I don't know why I didn't buy anymore really, it's not that I disliked what I heard of the later stuff, it's just that it seemed like there was no need to go there.
although you must also get Orblivion. That is actually the first album I've heard of him (them) and it's beautiful as well. Cydonia is also pretty amazing. So get in there and start listening to those first two, but don't stop there!
And shimmetry, get Orblivion, you'll love it.