Measurange, these guys are telling you the truth. The cheap power supplies can go bad in a fraction of a second and take out all the expensive components you purchased. DiaBLOtek unit have been known to explode while being tested by reputable reviewers.
Hmmm, it would appear that PCPartPicker is now blocked at work. Bummer. Anyway, if you are allowing $60-$80 for a PSU, you should be able to find a good XFX unit in that range, or a Rosewill Capstone. If you get a Corsair "CX," get a modular one, as the non-modular models were made using some inferior Samxon capacitors that don't care for heat (such as you'd find in a gamer) and may fail early.
The GX650 was summarized by HardOCP as a "polished turd in a box." Now I've heard it's been revised, but CM is not known for quality PSUs, except perhaps some of their really high-end models (and some of their latest in the I-series are supposedly being made by Seasonic). Since the company continues to sell many liar-labeled units however, I consider them dishonest and cannot ethically recommend any of their products, no matter how good.