I have two albums from him, plus one DVD. "Azure" is from the late 80s. The production is unremarkable (mostly ROMpler sounds), all fairly melodic, but the album succeeds despite this. "SkyZone" is from 2006 (I actually picked this up because an online friend of mine performs a bit on it), much more ambient and deep... I guess the best point of reference is some of Steve Roach's ambient tracks.
He has many more releases; I really should check some of them out.