This is probably the cheapest PSU I'd go for if I cared at all about reliability:http://www.newegg.com/Product/Product.aspx?Item=N82E16817104096
That is if you're talking retail. You can get very high quality PSUs and other components for dirt cheap or at least way less than retail on eBay. For example, I got a used Enermax Liberty 500W modular PSU with 22A on both 12V rails for only $28 total. It was $120 back when I bought it new. (I liked it so much I got another.)
Here's an old newegg link to that PSU:http://www.newegg.com/Product/Product.aspx?Item=N82E16817194003
EDIT: Whoops, didn't see that you had an mITX board there. I'd still go for the FSP if it'll fit in your case. Can't say I have any experience with mini-ITX power supplies. But do try a quick search on eBay for any particular component before buying it new, since it never hurts and you usually end up saving a lot.