Trying different output impedance taps with tube amps

bdp24,
I believe that Ralph has pointed out in the past that using the higher ohm tap results in less distortion, increased bandwidth and better efficiency.  
Roger Modjeski is definitely  a proponent of the "light loading" approach. Honestly it depends on the particular amplifier and speaker involved. My SET amplifier has no NFB  and this probably explains the better sound quality with the higher 16 ohm tap.
Charles 

My Quad ESLs (1957) need 16R taps on my tube amps with 8 and 4 ohms sounding progressively duller and colored. The difference is night and day. I guess it limits them to amps with 16 ohm taps.

My zu druid V speakers sound much better with the 8ohm taps on my prima luna HP.  It's not even close.

I only have a 16 ohm tap on my old OTL tube amp and I am using a 16 ohm broadband loudspeakers from Ocellia. So I can’t compare, but I can say is that this works very, very well.

I believe that Ralph has pointed out in the past that using the higher ohm tap results in less distortion, increased bandwidth and better efficiency.  

@charles1dad  Actually what I've said is that all amplifiers (tube or solid state) make less distortion into higher impedances; in the case of tube amps you also get wider bandwidth and greater efficiency.

Another way of putting this is if high quality audio reproduction is your goal, your amplifier dollar investment is best served by a loudspeaker of higher impedance- 8 ohms as opposed to 4 and 16 ohms as opposed to 8.
An additional benefit of 16 ohm loudspeakers is the speaker cable is far less critical for proper system sound whereas at 4 ohms its critical!