what do you guys think of the the D12SH yate loon high speed fans. they are only 5$ a peice and i have 6 of the silent ones now but i need more fans anyways and i would like the extra cooling alot. i k now noise will be an issue now. im looking for 6 fans for under 50$ that will give best performance. they will be going on a black ice pro 3X120mm rad.