Well I cannot specifically help with those two models, but I currently own 4 of James bows, and just picked up a used Taipain I am waiting to arrive.
I cannot add anymore to what others have said aside from I can almost guarantee that if you order one you will be blown away by it once it arrives, James bows embody everything you are looking for in a bow (minis the carbon takedown sleve which I'm trying to talk him into. ... I hope your reading this James LOL). Give him a call and explain what you are looking for