Looking for a MoBo, few questions

Hello and welcome to the forums !  
Well,motherboard has the least impact on gaming.Make sure you get a powerful GPU(Which is the most important part for games)
I'd recommend Z68 over P67 because it's newer and has more features.
As for PCI-E 3.0,well it's basically written in the tech specs.Currently,PCI-E 3.0 boards are more expensive than PCI-E 2.0 ones
If you need a PCI-E 3.0 board,then this MSI one fits your price range and it's good
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
But if you're fine with PCI-E 2.0,then have a look at ASUS P8Z68 series.

Thanks for the reply  

I wouldn't say I need a PCIe 3.0 board because I plan on using a PCIe 2.0 card for this build, however I know that Intel will be releasing a new line of processors in the near future that take advantage of PCIe 3.0 tech and I'd like to be ready for that in case I do decide to upgrade, which admittedly I shouldn't need to do for quite some time. I'm not really sure how it works, though. From what I've read here and other places, with one of the yet-to-be released processors and a simple Bios update, a PCIe 2.0 slot that most current MoBos come equipped with can be converted into a PCIe 3.0 slot, since there's no special connectors or switches required to make it work. I don't know if that's true for all MoBos or just certain ones, though. I'm also wondering if a PCIe 2.0 card will work in a PCIe 3.0 slot, because I saw a nice ASrock board for $130 that has, IIRC, 2 PCIe 3.0 slots. I only plan on using one card for now since I'm kinda poor haha.

As for Z68, I was kinda assuming the same thing so that's probably what I'll get. I checked out the boards you suggested and will keep them in mind. Thanks again.