hang on.. confused :P
'State of the art'... '2nd and 3rd gen'
So you're after a Sandy Bridge/Ivy Bridge based system then sir?
If so, check out the EVGA Z68 boards for 2nd gen (I have one, it's had the sh!t kicked out of it since 2011 and it still works
EVGA boards in general, especially the Classified boards, have always been good to me!
State of the art to me though would point towards X99 or Z170 like, PCI lanes on the board and more PCI slots than PCB space...