as a very general answer from what i know i have seen streckeri-in fact,all species of pigmy rattler-both in the field and in captivity-and most if not all were pretty pugnacious/fiesty/nervous....also have seen lots of southern copperheads-again both in the field and in captive conditions-and they seemed a little less quick to strike in general,in fact some have seemed almost retiring,to a point at least.that being said i'd generally describe both species as fairly nervous.i understand pigmy rattler venom to be a somewhat more potent than that of contortrix,but on avg they have at least a slightly smaller body/head/venom output per bite.....of course all that has been said above by others holds true.i think way too many hot keepers are not suited to do so,but imho if i had to suggest one of those two species i'd say a copperhead would be a less bad choice.


-----
"with head raised regally,and gazing at me with lidless eyes,he seemed to question with flicks of his long forked tongue my right to trespass on his territory" Carl Kauffeld