I have found that serpents are very mild mannered and peacful. I dont like spiders either but my crabs remind me a lot more of spiders than my serpent does...
if you get one, you will like him I bet.
The serpents are fun to pick up and let them zoom around on your hand. They are actually quite unspiderlike.
Hope that helps a little bit, tell us if you break down and get one 8O