Just a word of warning on several of the p67 and z68 asrock motherboards. They do support ivy bridge, but not unless you have an updated bios. I recently purchased an asrock mobo with a 3570k, and had to get them to ship me a new bios chip before it would post. If you have an older cpu laying around that you can use to upgrade the bios then it won't be an issue. Otherwise I'd go with a Z77.
I'm not sure what that means.
Are there any downsides to getting a Z77 chip, other than the price?
And what Z77 chip, specifically (brand and model), should I get?