The best price/performance coolers in CM's lineup are the 212+ and the V6GT.
The V8 is mediocre it's ok but not their best.
It's a rather old discussion,here on the OC thread.
The OP needs to be more forthcoming on his intentions/uses and what he currently has his cpu clocked at.
He has a sub $100 entry level mobo a H61.
I personally don't recommend coolers costing the same amount as the posters mobo.
Not that the V8 does but the most highly regarded air coolers certainly do.