the CX series doesn't have bad reviews, I don't know where you got that info. Here is a
newegg review link to the Corsair I showed. Don't give people bad info on products that are worth looking at.
go ahead buy one of the cheap models and listen to some one that has no clue on who makes the PSU. Corsair does not make that PSU some one else does. the reviews on newegg are not always reliable for longevity because most reviews are posted within a few months of purchase.
http://www.tomshardware.com/reviews/power-supply-oem-manufacturer,2913-5.html This will help you tell who made the PSU your looking at.
It's not bad advice if the PSU is made from low quality parts. The CX series only has a 2 year warranty and the other models of Corsairs have 5-7 year warranty. Why do you suppose that is? It is because the parts used in the CX series are of lower grade and of cheaper cost. This forces them to lower there warranty to not get screwed by returned PSU's that have died. Yes you can get lucky and get a good one but the quality and constant output will be lower and ripple will be much higher than a quality PSU.
You don't go to newegg reviews for info on how power supplies last or build quality you go to Tech web sites, Like this one, to find out from techs, like myself, how components hold up to real world usage. The last thing I ever quote is Newegg reviews. Yes they can help point you away from a bad product but it will not tell you the quality of the equipment.
I get my Info from years of experience in the field, not newegg review.
here is a revised list of PSU's from the newegg forum that is accurate for quality of the build of the PSU
http://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx
as you can see the CX series falls in the tier 3 category, Tier 3 Brands - Power supplies fully able to meet ATX specs, although closer to the edges of the limits than higher tier units. Still solid units.
this means that they are still usable but on the edge for quality and power output.
here is a breakdown of the tier specs from that link:
Tier Breakdown:
Tier 1 provides the best quality power, great for overclocking, super high-end systems, and bragging rights. The best of the best. Very good longevity.
Tier 2 offers very good quality power output, and great reliability. Highly recommended for use in new systems.
Tier 2b contains units that almost made Tier 2, but may not have quite as good quality output(still very good), or may not last as long. Recommended for systems not expected to run 24/7 for several years.
Tier 3 power supplies fully meet all ATX requirements for power output quality, but don't have as good of power output quality as above tiers. No reason to replace one if you have one, and they're still good choices for most systems.
Tier 4 units may have some problems, such as being unable to deliver rated power at higher temperatures, or being slightly out of ATX spec on power output quality. Not recommended to buy except in situations where you will not be stressing it, or expecting it to last for more than a few years. If you have one, you can probably keep using it unless you're experiencing problems.
Tier 5 power supplies are NOT RECOMMENDED. If you have one, you should strongly consider replacing it ASAP. These can damage your computer, and often cannot put out the power that they're rated for. If a brand name is listed here, then all models from that brand name are considered to be Tier 5, except for those specific models listed above.
Power supplies are one part, if you buy a quality one, that can go from one build to the next, to the next and so on.