I've been looking at the LK version as compared to the LX. http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=-1&IsNodeId=1&Description=z77&bop=And&CompareItemList=-1|13-131-824^13-131-824-02%23%2C13-131-837^13-131-837-01%23 Only thing I see different is a second PCIe 3.0 slot on the LK, but I don't remember an LK version of z68. I will be doing minimal overclocking, and want SLI ready. Don't really need extra features to drive up price, and I like Asus quality. I would look at z75's, but nothing from asus yet. Any thoughts?