All in all as a general rule the northern pine seems to be the best of them. With that said though I have one northern that is a real nut with the hissing and actual biting. Also te animals we use at 4-H clubs, scout packs etc for talks is a big normal and and albino bull. They are big, impressive and gentle as kittens.
We do not have the time to handle our animals and I am sure this would have a big impact on the overall tameness of any of them. They are generally fed, cleaned and inspected on a weekly basis and the resultant handling is all they get. But with that disclaimer our group of adults probally ranks as follows:
Northerns
Pacifics
deppei deppei
Bulls
San Diego's
Sonorans
Capes
deppei jani
bimaris
southerns
Blacks
John Cherry
Cherryville Farms
Cherryville Farms - Reptiles