>>> but which are the best at being handled consistantly...
in a word: none. These are not animals to be held. Sure, there is an ocassional story of one that tolerate's being handled but for the most part they should be left alone for the most part. Even if they seem "friendly" when younger they can change drastically once sexual maturity hits. If one runs out of the cage it is probably b/c it sees "outside the cage" as better than in it. These are solitary animals, need to be housed alone and donot show illness as readily as other species - sometimes until it is too late. They do require higher humidity and if you live in a dry, northern climate this can be very tough in the winter months. They also require a large, screen cage, live insects, etc. I say all this not to discourage you but to help in your decision to purchase one - or not. A beardie - they are not 
Here are a couple of sites for you to peruse and read up on keeping them
Chameleon News
This is a top source of current information compiled and written by “tops in their field.”
www.chameleonnews.com/
AdCham
www.adcham.com/
Chameleon Journals – www.chameleonjournals.com/
hope this helps!
lele
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0.1 veiled - Luna
0.2 felines - Kyndra and Líta
1.0 African Clawed Frog - Skipper
0.5 Mad. Hissers
0.1 Chilean Rose Hair Tarantula (no name yet)
?.? Goliath Bird-Eater Tarantula (no name yet)