Thermostat choice is dictated somewhat by climate and intended use. I live in SLC, Utah which has four seasons and 100 degree summer days. I don’t drive my truck much in the winter but do in good weather. I had a 180 deg. at first which ran too hot in summer. Now I run a 160 deg. which does not leave me wondering if it is going to boil over in traffic or leave a puddle when I park it.