Best Chelsio or Intel 10GBe card (with recent chipset)

I'm trying to find out what is the best Chelsio or Intel 10GBe fcoe card for freenas 9.2.*.*
I looked at the freebsd 9.2-RELEASE Hardware Notes and it seems that all the supported Chelsio and Intel chipset are old chipset no longer in production. I saw some forum thread about X520 based Intel Card that wasn't stable.
I'm looking for performance and stability, any ideas?

Thank you