I would suggest you hunt down V.A - "Tantrance Vol. 1-8" for all the early stuff. THEN I'd suggest check out some of the early Full On, TIP World compilations (esp. Crystal Skulls series) as well as 3D Story (3D Vision - only the first one tho). I'd also suggest a look at Twist Dream and Opus Iridiuim.
Chillout wise I'd say go for Tribal Matrix (Dakini), Materia Musica (Ajana Records), Future Sound Theory 1 & 2 (Celestial Dragon), Liquid Soul Vibration (Liquid Records).
That's it to get you started.
Avoid most post 2004 stuff as there is to much crud and not enough good stuff worth wasting time hunting.