the spray deal is cool, but totally impractical for our uses.
They are using a Liquid to Vapor multiphase system that took TONS of engineering work. Also the pumps you would need to move that kind of pressure would cost 800 - 1000$ at the least.
Its a cool idea, but a cooling system like that for a PC would run in the range of 2000 - 3000$ total in the end. I will just buy a faster CPU for 200$ and be done with it instead

The Idea of spray/evaporation is cool, and much more effeicent than raw waterflow, just way out of most peoples reach ATM.
EDIT:
About Votex tubes. Another great idea... but where you going to keep a steady compressed air source? a big air compressor with a 100% duty rating?? Thats a few thousand bucks there alone. What about the TERRIBLE screaching noise those tubes make. They are NOT silent, they are louder and more annoying than anything I have heard in a PC ( I have seen them used at a local metals shop to cool a lathe bit). Both are awesome ideas, just not practical for our use.