Which is better based on your personal experiences - Super dwarf Retics or Dwarf Burms?

I know that both sub-species/small island forms are roughly the same length as adults - ~5-8 feet(1.5-2.5 meters). With the dwarf burms generally being more robust build and heavier in weight.

But what is your preferences, based on their respective temperaments, ease to care for, and other pros and cons.