OC version or not, it's just a gimmick. Unless you really do appreciate out-of-the-box performance and do not bother overclocking on your own.
Actually at this point, I think what really matters are the coolers. Some people are naturally biased against reference coolers xD

Sometimes, certain brands do offer capacitors that are a lot better, but those usually cost a lot more. For instance the Gigabyte SOC, or MSI Lightning. These appeals to overclockers who wants to challenge the limits with their ultra-pimped up configurations =P

Just my opinion.