Very good
Used mainly with a MacBook Pro, this 10GbE SFP+ network card lets me connect to the rest of my 10Gb/s LAN comfortably.
It heats up a bit but is perfectly silent.
A speedtest on one of my 10Gb/s servers gave me 9800Mb/s down and 8600Mb/s up from the MacBook Pro.
Recognised by macOS directly without the use of third-party drivers/kexts (plug and play).