It's funny that that guy would have bad experiences... All of the boas I've ever handled (mine or when looking at shows) were very chill animals. Now, I have heard that the smaller island localities and sometimes CAs (central Americans) can be a little more defensive, but I haven't found that with my CA motley. If you want a very calm snake, a male Bci (any morph) would probably work well for you or a male Bca (I have a male Bca and he is the calmest snake on the planet except during feeding time). The Bcas are great looking snakes, but they tend to get a little heavier than normal Bcis (same length, just chunkier as adults) but if you don't mind that, you could look into them as well.
I've also heard good things about Bcls (longacaudia sp?). They are the same length as Bci on average, but thinner and get very dark / light contrasty areas as adults. I'd LOVE to get a pair one day. For great info on pure localities, chceck out cutting edge herp or legacy reptiles. Both have great pics and info on their websites on the different subspecies and locales. Both also breed local-specific boas, so if you want a non-morph boa other than a "normal" (which could be mixed origin) then check into what they have.
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