Your i7 3770k will support RAM at up to speeds of 3200 mhz, your mobo will max out at 2800 mhz, and the fastest ram on the market is Corsair's Dominator Platinum (http://www.ramexperts.com/corsair-dominator-platinum-series-16gb-4-x-4gb-ddr3-dram-2400mhz-pc3-19200-c9-memory-kit-for-ddr3-systems.html?utm_source=google&utm_medium=cse&gclid=CJPCv7iP6bECFQdjTAod3TIAUw)
2400 mhz RAM, which is pretty awesome to look at on a screen, but not even close to worth buying at that price. But as long as you get the right kind of RAM, you can't really go wrong. I'd go for a nice 1866 mhz CL7 8gb kit.
Hope you have lots and lots of fun with your new rig.