The orange and black label VS models and the green and black label CX models should be avoided. Completely. Currently we just cannot justify using one of these units. The track record is terrible and if you have one, especially if it is more than a year old, it is probably either already failing or if you are having problems, is likely the reason why. If you don't already have one, avoid them.
The black and gray label VS series units are much better than the older orange and black label VS models, but they are still units you really only want to use with basic use office or internet browsing machines, or in a pinch, maybe a machine with a lower TDP slot powered card. Also, they are not a modern design, having an older group regulated platform which you can find plenty of in depth information about if you do a search for "group regulated power supplies". These are better than any of the units down below in the wall of shame list, and better than the older VS and CX units, but don't assume you that you can simply pair a graphics card that has a 550w recommendation with a 550w VS unit and not have any problems, because in all probability, you will. These units are not meant for use with high demand gaming systems. In a PINCH, for VERY short term use, they will work, but they are not going to last under the rigors of daily gaming loads.
The CXm units are fair. They are "ok" for the price and if the price is right you could do worse. The non-green label "2017" CX models are slightly better than the CXm units. For a budget entry level unit, they are fairly decent. They are not great or fantastic, but they ARE ok, if this is ALL you can possibly afford. Don't buy one of these expecting it to last as long as an RMx or EVGA G2 unit though. It's not going to. It's a good entry level offering and that is all.
The Vengeance models are a small step up from the 2017 CX units.
Aside from that, any of the TX, RM, RMx, RMi, HX, HXi, AX or AXi units are good. Those are listed from good to best, with the best of these Corsair models being the AX and AXi units.