man, just started reading this thread. sorry to hear you got to deal with that crap. i am not a canon fan, i do like their point and shoot and their bridge cameras but i don't know for some reason i like nikon for DSLR, canon does have some very nice lenses though..
just out of curiosity what is the problem with the 7200 and 150-600 that makes it ho hum.. that is what i am shooting with and there is one thing i have going on that i feel is a pain in the ass with that set up, i constantly have to use exposure comp between +1 or some times up to +2 because when using auto ISO it usually does not give me a proper exposure, its usually underexosed so i need to adjust it my self with exposure comp constantly.