Get the MasterLiquid Lite 240, of course. Better aesthetics and cooling performance than Hyper 212. However, I assume you know the downside of AIO Liquid Coolers, just a case to case worst scenario basis - leaks, unlike the Hyper 212.
There's more to it than that.
Aesthetics, which is individually subjective, is ALL the ML 240L has over the Hyper 212 in this situation.
It's not going to automatically outperform the 212 on a cpu that can't be overclocked, also being well within both coolers' ability to cool; there will hardly be a difference in temps.
AIOs are more expensive overall:
-Yes, AIOs can leak - regardless of their low chance, it's there.
-Have to be replaced more often: those pumps aren't eternal... usually between 2-5 years. Some people who do use them actually forget, or just don't know about this, and they come here or to some other tech forum wondering why their cpu's temps suddenly went to hell even though they haven't changed anything.
-The only time AIOs are 'cheaper' than air coolers are simply in the 300w+ range where the latter just can't touch right now, so it drops off the radar. Below that, an air cooler all the time, every time.
-Aesthetics? Look at it this way. You've taken a big ol' block on top of the cpu, split it in half, and relocated one half to a less visible side of the case.