Optimum Compression Setting in Capture One Pro

Consider this an informal poll:

As a user that's always used IIQ large, I would like to know which compression settings you all use when shooting in tethered mode. Do you see any differences in quality, speed, etc? What's your reason behind using the other available compressions?

1) RAW 3.0
2) IIQ Large
3) IIQ Small

Sincerely,

Alan Balian