[mferg]

Okay, I'm going to ask this question on several different forums:

Tri-Tronics or Dogtra? Not the big, whopping, dumbbell size controller that Tri-Tronics has, but the smaller version that looks much like the Dogtra. Model? Why? Multi-dog, single?

Also, any insights to the DT-Systems brand?

Use would be for obedience and protection. Mid-level (mid-priced) model.

Thanks a lot!