Well, I find the Security SIX snub to be a bit easier to shoot DA due to it being a bit heavier and better sights, but those same sights can snag when drawing from concealment.
Note I turned my Security SIX snub into a rnd butt and added Eagle Security Six stocks.
For ccw I prefer the Speed Six due to snag resistance. For general purpose, including home defence and now and then ccw the Security Six.
Deaf