Looking for a $50 or less air cooler.

Hey all,

I'm getting myself a 'new' desktop PC, it's an Intel i5 650 with the socket if LGA 1556. I believe that the LGA 1555 coolers also work on this socket.

I'm setting up the PC for gaming, I'm probably going to buy a HD 7850 GPU for it. It's a Micro ATX motherboard. I'm not sure how much room is in the case for a cooler, and unsure how to measure it, it looks fairly large to me. (I'm trading so I am able to measure the space available if I could be told how to?).

I can spend up to about $50, but the less the better. I can over clock this CPU so I may do a little of it, but nothing extreme. I'd like if the cooler is future proof as I could upgrade my CPU to a haswell in 6 month's or so.

I'm Australian so price's are a little high over here. If you'd like to make suggestions you can look at MWave & MSY. I'm not brand specific or anything like that, just looking for the best quality for the price.

I've never used or fitted a custom CPU cooler, so it's a new thing to me. One another things would be should I use the Thermal paste that is supplied, or change it to a custom option? If so what are some good Thermal Pastes.

I found a nice Antec Cooling Freezer 13 for $40, it dosen't look to bad to me. Link is here.

Thanks! Hoping to get some good replys.

EDIT: The case is an Antec 300, as you can see below:
http://store.antec.com/Product/benclosure/three-hundred/0-761345-45003-4.aspx