Pros: Quality Product. I've had this thing running in a system almost constantly for over 2 years now and never had a single problem with it. Have another Enermax PSU with over 5 years of constant use only being turned off during storms and performs flawlessly.

Cons: None I can think of, maybe the fact that Enermax PSUs aren't cheap but you get what you pay for.

Overall Review: My advice, spend the money on a decent power supply. The $15 500w PSUs might last you a few years, and they might set your system on fire 10 mins after you boot up for the first time and start formatting your hard drive to load your OS, you never know what you're getting with them. It's not worth running the risk (in my opinion anyway) of torching your rig.