Agreed. I LOVE OU & KU's houses.
The beta house at OU is phenominal. I think what I find most impressive for OU is the amount of land the chapters have. It's one of few campuses where they are able to build out as much as they want. The DTD, KE, Phi Delt, FIJI (wow!), EN, DDD houses in particular go out way more then they go up.
pics of the houses:
http://studentlife.ou.edu/content/view/153/