Same here, don't need more bandwidth than the x2, the cost of newer cards is too much, and when the price is low enough, looks like support will end soon on them so no point in buying them.
I have a problem with the current install that i have, which is in development, but as it looks like support is a problem, I dont think i will try hard to resolve it as I think I will probably scrap it and go with 10Gbit ethernet instead, using intel cards.