I'm using:
msiexec /i "SEE Client_x64.msi" /l*v "c:\SEEUpgrade.log" ALLUSERS=2 WINSETUPAUTOMATION=1 REBOOT=REALLYSUPPRESS CONDITION_NOUI=1
It works for me in all of my testing but our techs are seeing failures, it seems every article I find on here has a different command line, anyone have a better one to be using?