Easily qualifies as one of the funniest things I've read here
The EP+ and the CX series are similar, there made by good brands, but are the cheapest model and wont provide the performance your expecting from the brand name.
Also, your not paying the premium that you would for one of these brands.
Did you know the CM EP+ 600 watt has a better customer rating than the CX series 600 watt? That's coming from real people who have purchased them, the CX series is more frequently DOA than the CM's. I personally think that the quality is similar, but the CM has a smaller 12v rail. The only bad review i've seen about the cm EP+ 600watt was from hardwaresecrets, where they try to overload the 12v rails and wonder why it doesn't work.
Both of these PSU's are no-frills PSU's, delivering just barely what they claim, with little extra features. http://www.tigerdirect.ca/applications/searchtools/item-details.asp?EdpNo=422166
4.4 Star Ratinghttp://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=4434993&CatId=1483