If it is a system purely for gaming, then the H81 motherboard would be the obvious option; you should spend the bulk of the money on a GPU. There are also H81 motherboards, where it is possible to overclock the CPU (if you plan to get a K-series CPU), and so the feature set would be practically the same. In short, I would say you either buy a nice Z97 motherboard, or get the H81 motherboard, depending on whether you value the extra features of Z97.