I would have to disagree about coppers being slower and less spastic then cottonmouths. Copperhead can be EXTREAMLY fast and I have had more headaches with them then with any other pitviper/Viper (and I have kept many different sp!). Babies are down right horrible at times and even adults, esecially WC A.c.contortrix go ape sh!t when disturbed. Ive had many that would come flying out of their cage the second its open and god forbid one hits the ground in your snake room! On a few occasions I have had to dig them out from under a rack or table because of this very senario and talk about a pain! I think I spent 30 mins on my hand and knees trying to fish out a juvi intergrade mokasen/contortrix! God that sucked!
Also, Wit Gibbons did an expeiment between native Crotalus, Sisturus and Agkistrodon and out of every snake he tested, copperhead were hands down the quickest to strike first when restrained or trodden upon!
Also, copperheads are much slimer and agile then there lumbering brothren the cottonmouth and although, as you said, many are down right tame, the few exception (and every one found in NC! I think theres somthing funky in the water there that gets the chunkers pycho!)are absolutly horrible!!! I have never had any problems with cottonmouths that could even compare to the most miniscule tango session with a chunkhead.
As for which sp is more rewarding, thats up to the person. I personaly love both but think cotton are alot easier to deal with, most of the times. Though I have yet to see the tame cotton, I have never seen a spastic one even come close to a copper. Although their colors generaly are drap, their size more then makes up for it, especially when you have a 5ft monster like I do:-D And you call your self the Kottonmouthking:-D
No matter what though, neither can compare to a Cantil!! Now thats a freaken crazy snake!! Although my taylori arent all that spastic(Ive been told im lucky though!), they will lunge off of the ground everytime trying to bite you!! Bloody nutty snakes but man they rock! The dang thing death roll their food regularly and do thing a Bothrops asper would be proud of! Actually, according to some herpitoligist, Cantils are more feared within their range then asper! Yikes!!!!
Ok, enough Agkistrodon talk for now:-D
Cottons rule!
Later,
J