The TR Ultra-120 Extreme is probably the best air cooler. Or maybe the second best. I've read the Enzotech Ultra-X beats it a little, with a little more noise. With the AF7 Pro, maybe 2.8GHz-3.0GHz.
It's better because it has more heatpipes, I think. But most people go for the Tuniq since it's cheaper, and already has a fan included, in which the Ultra-120 Extreme does not.
It has 12 copper pipes which moves heat around the metal plates while the Tuniq Tower 120 has 6 copper pipes running along both sides. Also you can have an option to add two 120mm or 140mm attached to both sides of the TR-120 Extreme which will blow out the heat.