Depends on which you like better - retics or burms. A super dwarf retic isn't a substitute for a full-size burm. Nor is a dwarf burm a substitute for a full-size retic. (Don't roll your eyes. Ha! Ha! I just had to say that for clarification to anyone/everyone reading this.) 
Let me put it this way: In my experience, a super dwarf retic's behavior/disposition is closer to a full-size retic than a dwarf burm's behavior/disposition is to a full-size burm. Not a whole lot closer, but some.
Take care!
HH
-----
Due to political correctness run amuck,
this ol' hillbilly is now referred to as an:
Appalachian American
