MSI Z77 MPOWER or ASUS P8Z77-V For i5 overclocking?

I've been looking at the ASUS P8Z77-V for my new build and I'm wondering if the MSI Z77 MPOWER will be better/easier to get a stable OC with my i5 3570k.

Yes, the MPower will be an easier board to overclock with, this is because every single board is tested with an i7 3770k that is overclocked. They test it with prime 95 for 24 hours and if it fails they take it back to the factory for it to be worked on.