Based on what I've tried so far, I think New Age is just trash. Ambient is one of the genres I seem to gravitate to and love most. With Trance/EDM/IDM, there's alot of crap, but alot of stuff I love as well.
These are my favorites.
5.0 (Masterpiece)
1. Selected Ambient Works Vol. II by Aphex Twin
2. Possible Musics by Jon Hassel
3. Ambient 4: On Land by Brian Eno
4.5 (Brilliant)
4. E2-E4 by Manuel Gottsching
5. I Care Because You Do by Aphex Twin
6. Ambient 3: Days of Radiance by Laraaji
4.0 (Flawless)
7. Music Has the Right to Children by Boards of Canada
8. Tri Repatae by Autechre
9. Richard D. James Album by Aphex Twin
10. A Rainbow in Curved Air by Terry Riley
11. Atem by Tangerine Dream
3.5 (Great)
12. Orbital 2 by Orbital
13. Disintegration Loops by William Basinski
14. Geogaddi by Boards of Canada
15. Amber by Autechre
16. Selected Ambient Works 85-92 by Aphex Twin
17. Ambient 1: Music For Airports
3.0 (Very Good)
18. Trans Europe Express by Kraftwerk
19. Pop by Gas
20. U.F.Orb by The Orb
21. Haunt Me, Haunt Me, Do it Again by Tim Hecker
22. Lifeforms by Future Sounds of London
23. Music for Films by Brian Eno
24. Cluster and Eno by Cluster and Brian Eno
25. Discreet Music by Brian Eno
26. Adventures Beyond Ultraworld by The Orb
27. Go Plastic by Squarepusher
28. Cyborg by Klaus Schulz
29. Incunabula by Autechre
30. Electronic Meditation by Tangerine Dream