ga-z87m-d3h

I see two motherboards. GA-Z87MX-D3H and GA-Z87M-D3H. There is a difference of 2500 in their cost. I don't see any comparison between them in any forums. From the Gigabyte website, the differences that I can see are. GIGABYTE Ultra Durable™ 5 Plus Technology instead of GIGABYTE Ultra Durable™...