I stand corrected. Price doesn't correlate with quality in PSU's.
There's a lot of expensive no-name crap out there.
Of course brand is probably the best correlation with quality but interestingly so is weight. So long as makers do not start purposefully adding weight (none I know of so far have) if you pick it up and it feels light.... its junk.
I have seen Xion and some other units and they are about 1/3 lighter then the good brand names and they do not last.