Thanks a lot for your help Martin, It is very much appreciated.
I think I will be getting the Venemous X, and it apparently comes with the brackets, a quote I found on another forum:
"I ordered mine with a Scythe S-Flex 1900 RPM fan, the Scythe fans are known for their value and low noise. Venomous X includes 2 sets of fan clips for those who want to set up a Push/Pull system with 2 fans." So should be OK from that respect. Now to pick the fans:
The one quoted above:
NCIX.com - Buy Scythe S-FLEX SFF21G 120MM Cooling Fan 1900RPM 35.0DBA 75CFM FDB 3/4PIN - SFF21G In Canada.
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