3 is just impossible... I'll give you 5 in no particular order (except Deviant Electronics, Mr.Walsh takes the cake for me)
Deviant Electronics
1. Catharsis
2. Viral Spiral
3. Phenomenon Anon
Marcello Bonifacii (so, Ominus/Encens/Aeternum)
1. Ensanity [Aeternum]
2. Spiritual Transgression [Encens]
3. Mindbender [Ominus]
Green Nuns of the Revolution
1. Two Vindaloos & An Onion Bhagee (most insane climax ever)
2. Magellanic Cloud (just about as mad as Two Vindaloos)
3. Thunder Thighs/Fire (those two essentially tie for me - Fire is also a mad escalation and Thunder Thighs is the most fun and funky goa track I've heard)
Extra I - Psychaos
1. Dense Dawn - no need to say anything...
2. Spatial Distortion - very phat and eeeeevil
3. Science Fiction/S.E.T.I. both are timeless classics, can't just pick one
Extra II - Nervasystem
1. Initiation
2. Rotating Rama - that bassline is just....no words
3. Cybermat/Dimension Expansion
Nervasystem is just generally great with the long, building tracks