turkey3_scratch :
Honestly I don't consider the S12ii that high quality, it's been shown to have lackluster protection circuitry and has an 8-pin housekeeping IC. I believe it lacks OCP on the minor rails (User Stefan Payne on Jonnyguru knows all the gritty details of this).
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=185
9.7/10 is not that good? That's probably the highest score JG has ever given to a ~$40 PSU and most other PSUs near that price tag won't get you Chemi-Con or other top brand capacitors all-around.
As for the 8-pin housekeeping chip, that doesn't really matter as there are multiple ways to achieve the same result and short-circuit protection is a mandatory part of the ATX power specification. Since the S12-II have exceptional cross-load regulation for group designs, Seasonic clearly did some things differently from typical (magnetic regulation?) and that could very well include protection that isn't compatible with regular monitoring chips. Seems highly unlikely that Seasonic would outright omit mandatory protections.
"The Seasonic S12II Bronze 430 W is a flawless power supply."
http://www.hardwaresecrets.com/seasonic-s12ii-bronze-430-w-power-supply-review/11/
http://www.anandtech.com/show/2327/10
"The S12II is one of the best power supply series on the market"
Reviews of the S12-II series are overwhelmingly positive and the 430-620W models are more affordable than countless sub-par to horrible PSUs from other vendors. They're an easy recommendation, unlike Corsair which has both bad (old) and new (good) PSUs under the CX brand, which makes recommending those confusing at best.