I don't think you can go wrong with your planned brands. I like the zalman zm-f3 fans because I run them off the motherboard and they are cheap (also quiet).
I have some zm-f3 right now and you're right they are cheap but when you crank up the rpm's they are a bit too noisy for my taste and also I am looking for fans that move a bit more air than them.
Seriously though, don't get the 1900 rpm slip stream. It's outrageous at full speed, it caused me to buy a couple Silverstone fan controllers (which I certainly don't regret).
KyleSTL have you tried the Scythe Slipstream ? I was reading about them on other forums and people who have them seem to be pretty satisfied. I was thinking of getting 2 1200rpm's and 3 1600rpm's.
I love the slip streams, at a certain RPM. I have the 1900s and they are absurd at full speed, but 1600 or 1200 sounds good. It's almost become the de facto 120mm fan over at silentpcreview.com, and that is quite the praise. I'd say go for it.
