black ice micro 2 or black ice pro 120?

i was wondering which is better
the black ice micro 2 or the black ice pro 120mm rad?
i would prefer the bim2 (i have a pair of 80mm blowholes in the top of my case) but if the pro 120 is substantially better i will get that one
thanks in advance.

~Magick_Man~

p.s. if a mod reads this please delete my other post in the water sticky area, i wasnt paying attention and i accidentally posted this in there.
sorry for being so noobish!!

The most efficient is usually the one with more cooling surface area (with similar water channel design). I don't know the dimensions of each rad so i'll let it to you
BUT from a noise standpoint, 2x80mm fans will ve way noisier than 1x120mm, for the same airflow...