Now that we have LED rings surrounding our knobs, we do not need our rotary encoders to be illuminated. As a result, we can upgrade to the higher-end Bourns EM14, which is an optical encoder.
What makes it particularly attractive is that it provides 32 PPR resolution with detent mode, therefore matches the 32 LEDs of our illumination rings. The encoders that we were planning to use were limited to 24 PPR, which would have been awkward.
Another benefit is that it is available with a cable instead of headers, thereby could be replaced easily. The same applies to the Avago rotary encoder used for our shuttle wheel and to the Penny & Giles PGFM9000 used for the faders. All the controls that we are planning to use are pretty much the best that money can buy.