Emerald Tree Boa, or Green Tree Python?

Hi, I was looking into getting either an ETB or a GTP as my newest addition to my collection, but I can't quite make up my mind of which one to get. I'm definitely leaning towards a GTP, but I'm not sure yet...
How different is the care for either of them? Which one is more docile, or has a better appetite? Have either of them been known to die suddenly and for no specific reason? Which is best for an intermediate snake keeper?

Thanks to all of you! I plan on getting this baby around September, but I don't know which one I should set my heart and research to.
:snake::snake:

http://ball-pythons.net/forums/showt...en+tree+python

From my experience the GTP's have better temperment. What I also like about them is the difference morphs of colors they have which seem to catch my eye alot better. Both snakes are aggressive and do require special care but i prefer the GTP