What are the currently best performing WC parts?

[H2O]

1. Best thermal compound : Arctic Cooling MX-3
2. Best radiators: Termochill PA`s or TFC Monsta

This stuff works much better than MX3 (albeit it is more expensive and harder to apply).
http://www.performance-pcs.com/catal...ducts_id=26226

As far as rads go:

http://www.skinneelabs.com/Radiators...riples-V2.html