The Corsair H80i v2 is a good steady AIO and corsair AIO's have never let me down. The NZXT m22 did not get the best review on Guru3d but at your price you could pick up something a little better on overall cooling with a 240mm AIO from Cooler Master the MasterLiquid ML240L RGB which should be around the same price as the Corsair. It is very cost effective in the UK but not sure on the price where you come from.