Xigmatek's new NRP-MC851 is a nice PSU in the high-end range. It can offer stable voltages and very high efficiency. But other than that I find it hard to see points where the PSU can impress. Don't get me wrong, there's nothing wrong with the unit and it is doing a fine job. But to get into a market that is dominated by much bigger companies (at least I think) you should have a product that makes people go "wow" so they are willing take the risk of trusting a less well known company.
However, if Xigmatek can get down the price of their product and offer it at a range of retailers the NRP-MC851 has the potential to be a success.