A Good Gigabit Ethernet PCIE card

[fearingsept]

I need to add a second ethernet card to my core. Anyone know any good suggestions for a Gigabit Ethernet PCIE card. I just don't want to get one and find out later that it doesn't work.
Thanks

[sandos]

Intel 1000/Pro work well and have open-source drivers. As do many other cards, I should add.