I'm a fan of Seasonic power supplies personally, and if I remember correctly Corsair rebrands Seasonic units. They tend to offer the most protection (over/under voltage, over current, short circuit) when compared to generic inexpensive PSUs, which is a trait I value highly. No-names tend to lack these features or implement them poorly, which I've seen result in toasted motherboards on more than a few occasions.
I don't have any experience with Sparkle PSUs, but they at least claim to offer over voltage, over current, and short circuit protection. Point is moot in this case, however, as the Sparkle PSU equivalent to the Corsair OP had listed is identical in price. The Corsair CX430 also has 80 PLUS and a $20 MIR, so I wouldn't personally chance going with a less expensive model. Seems you've put together a pretty good system. If any more $ is to be shaved off, it would probably be had by finding good combo deals on some of the items.