Best kernel ethernet device driver

[Chris Stankevitz]

Hello,

I once had a problem in linux "sometimes connecting to windows file 
sharing with CIFS is extremely slow."  After too much searching, I 
discovered the problem was a buggy kernel device driver for some lame 
ethernet card I bought.

Which kernel ethernet device driver works best under FreeBSD?  I want to 
purchase an ethernet card that uses that driver.

Thank you,

Chris