I have to confess to being a bit grumpy when it comes to ambient trance. It seems to me that too often these CDs are a bit bereft of musical ideas. In some of the worst cases, they are little better than glorified muzak.
Unfortunately there is no single recent ambient trance CD I can heartily recommend. On the contrary, I am on the lookout for suggestions...
In the past, the two ambient trance CDs which impressed me the most (at the time they came out; they have both become somewhat dated) were Saafi Brorthers: Mystic Cigarettes (!!) and Saafi Brothers: Midnight's Children. released in 1997 and 2000, respectively. Unfortunately, Saafi Brothers' last offering, Liquid Beach, did not excite me as much.
Pedro