I got my angel for a steal ($14 free ems shipping) anywho I ran it a couple of times and its not a bad tama I got deberutchi on it and that was cool, couldn't do anything with him though (was bummed out)
As for which is better, that is all relative to the person you ask, that's like asking which fruit is better, some will say apples other oranges. Price wise though, I'd love to have a devil, but unless I win the lottery or am loved very very much then I doubt I will ever get one so I can not say which one i prefer over the other. That's like saying you don't like something though you've never tried it, I can't really say until after I have tried it out