Need a good carbon filter

Just about to flip my girls into flower and am just wondering what a good and not outrageously priced carbon filter would be. Would love to hear what you guys are using and how they perform. So many different kinds and prices. I will be running out of a 4x4x6.5 tent with a 600 hps air cooled hood. Any info is appreciated.

Come on guys, i know most of you are using filters...just want to know what you think of the different brands you are using.

What I use.

Works perfectly, adapted it to 6'' duct, just up sized everything.

Props to Bodom Children Of.

any diy one made here is great, there are 2 main styles. the tube style and a more cabinet looking one.

the can filter is a good one at a reasonable price i guess.
you can make it for atleast half the price. and if you find a good store aquarium store locally you can get the carbon in bulk cheap

Thanks for your input guys.