In the cold I tend to steer toward products that don't really need to set up, so will go for #16 and CMW over #21 and NXT. Basically carnaubas over sealants.
Scott-clarify this for myself and others. I've always thought of 16 as being a clear product like 845 and Nattys blue being a better product on darks like 26 but wetter. Am I mistaken-looks wise? (never used 16 or NB for refference)