If you want to save money and get a better power supply at the same time then there is no better option than that Xigmatek, it is better than the Antec Earthwatts EA-650. If you want to stick with the worse power supply because of a lack of knowledge then go ahead. However seeing as it's out of stock, here's another good one which you won't be able to argue with:
SeaSonic S12II 520 Bronze 520W
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151094
Please don't doubt my knowledge of power supply testing review sites, I read tons of power supply reviews, and not just at jonnyguru. You can't rely on one reviewer to test every unit out there, and there are more good units out there than just the ones that have been tested at jonnyguru.
May I ask how you happen to know that OklahomaWolf is 'independent', did you find it out a different way than I did? Which was just reading his reviews.
Surely one of the things you should be interested in when reading that hardwareheaven review was that the capacitors are Nippon Chemi-Con and Teapo and rated at 105C.
And I don't see why you're saying that it would take longer to get to you, I posted a newegg link, it will take just as long as the Antec to get to you.