I want to create a nice airflow for my case, currently it has 1 sidefan in addition to PSU fan, cpu fan, and VC fan. I thinK I want to get an intake in the front bottom, and two fans blowing out in the top rear. What are some good fans that are reasonably priced and at least relatively quiet?(preferrably available through newegg) Also what size do I need? I have an ATx case, so the holes I believe should be pretty standard. Also, what exactly does a controller do and should I get one? Any help is much appreciated.