I went with MSY because of cost but would expect a BIG battle if I needed to return a faulty unit. We suffer from limited suppliers in Australia unlike the US who are spoilt for choice
To RMA from overseas is a bit risky.
I made a mistake and chose a PSU that doesn't cater for too much growth. I'd go for an efficient 750W - but then I'm not a Gamer.
I wouldn't touch an LG anything - in my opinion
their customer service is very bad in this country.