ARC REF 110 amp ohms


I was wondering if there is any consensus on which ohm taps work best on the ARC REF 110 amp (4 ohm, 8 ohm, 16 ohm)? I am using it with the ARC REF 3 and Vandersteen Quatro speakers. Thanks in advance.
tlg
The speakers are spec'd at 8 +3/-3 ohms, and I would think that the specified tolerance implies that is the range of variation of the impedance vs. frequency curve. So the best bet is likely to be the 8 ohm taps.

Regards,
-- Al