There are better, cheaper, quieter, safer options with air cooling.
Uhuh elaborate?
NH-U12S / NH-U14S
NH-D15
PH-TC14PE
I agree there is equivalent/marginally better performance to be had with some of these air based products. I don't agree on the safety point. One may assume that the concern is simply translated from possible leakage to stress on the PCB structure? As for noise, I would imagine they would be equivalent (I'm not considering stock fans on the H100i; that would be naive).
I just don't like the bulk and sadly lack the funds for a full liquid cooling system at this time.