Personally I was thinking of Enermax Magma or Enermax Everest fans I don't know if anyone uses them in rad setups though. Personally those Yate Loons are too much crap imo. They are like budget stuff Like those Addo fans. Had them and hated them Noisy as hell due to crap material use. Sure Noctuas are for silence but the price is a bit much to add a bucketload of them