Too many variables to give one definitive answer. Different people have different temperature sensitivities, for a start. Is that maybe due to varied nerve sen

Too many variables to give one definitive answer. Different people have different temperature sensitivities, for a start. Is that maybe due to varied nerve sensitivity, or perhaps greater or less vascularisation of the mouth's mucous membranes which would conduct heat away faster or slower? A lot of research would be required on a subject which is pretty much unimportant for most people. Suffice it to say "I can feel what temperature is my preferred one".