Advice:
--This is better asked in the revolver forum
--This gets BETTER model-specific response if you give a clue in the subject title such as "which Public Defender? Help!"
--doing the above may help to weed out the MANY of us who would impart much more general advice such as... both are a BAD choice and if we knew more about your specific needs, we would recommend other choices that simply do not include Taurus revolvers chambered for the .410 shotshell