idk i debated but i think for the performance, noise and price the 7000a would be best for me, i mean if you get a 800 or 900 and put on a pwoerful fan that sounds like a hairdyer you probably will get better performance with added cost but at the same dba levels im pretty sure the zalman will win becuase of its unique design. I was going to go with a 900u + 92mm tornado but then id have to deal with fan controllers and what not, and when it comes down to it the 7000a looks cooler, performs great and is quiet.