The Antec TruePower Quattro 850w is most certainly not the best 850w power supply on the market, it doesn't have the best efficiency and the high DC output comes at the cost of the DC output quality in the upper 50% of its range. But when priced at $169 it is an incredible value. If any 850w power supply can be called a bargain power supply, the Antec TruePower Quattro 850w is it. The Antec TruePower Quattro 850w does represent a exceedingly good value at the sub-$175 price point.
If you have a look at the ripple and noise during test 4, it does look like the +3.3V flakes out quite a bit. We reviewed the unit here at jonnyGURU.com as well. We did not see nearly as bad of ripple and noise on our unit as Paul found on his.