Bought the Corsair CX750M. It’s small, plenty of power, and the least amount of bad reviews I could find (plenty of excellent reviews, too). And it was slightly under $100; a lot of the higher-end power supplies were in the $120-$170 range.
I like the modular nature; I’ve never had one before. My Antec power supply has a ton of power cables I don’t use cluttering up an already tight case. (Seriously, who uses molex connectors anymore? This thing has like 4 of them alone).
Should get here Tuesday (thank you, Prime!), same day as the Haswell box.