A Good Radiator?

Are there any good radiators for under $50? I was searching around and came across this and this. Are these any good??

I'd go for the heatercores. The Black Ice are nice in that they are smaller, but don't offer any performance boosts, and I believe they constrict the flow more than the heatercores. And if you have an Autozone near you, they sell them for $17.99 (tell em PN# 399069 as most probably have no idea what your talking about if you say you want a heatercore). So I'd recommend the heatercore and a fan shroud or two, depending on how many fans your gonna run.

I'll run as many as I need.
Where are some good places to mount them? I was thinking about the top of the case, but that would look crappy later on if I ever decided to get a better one... I suppose I could make an external box or something...

These are popular, I have one myself and have been happy with it. You can get an unpainted one for $5 less.

I put mine in the front intake. I had to remove an empty drive bay, and enlarge the 80mm fan hole.

How are your temps, and what cpu and speed?