Which model quad port nics (1gig is sufficient) should I be looking at getting to allow each nic to be passed through to separate vms? Any particular ones that are recommended?
I like the Intel i350-T4. Very good features, you can passthrough single ports, great compabilitiy accross all platforms and you can get it second hand for around 35€. There is a v1 and a v2 revision and if I remember right not all v1 revisions support SR-IOV. But make sure you buy a genuine one as there are many fakes out there: https://forums.servethehome.com/index.php?threads/comparison-intel-i350-t4-genuine-vs-fake.6917/