Out of those two choices, I'd take the Norinco, although I think the IMI is probably more reliable out of the box.
I would take the Norinco because of my history with 1911s, and Norincos. I feel pretty confident that for a few hundred dollars I could make it into a very reliable 9mm 1911, and those are a lot of fun.
I'm not particularly a fan of the CZ-75 and knock-offs of a gun that I don't really like that much don't appeal to me.
However I will be the first to admit that if I were to rank the various people I have learned about shooting from from 1-10, Slavex is far and away number one. I have learned more from Slavex than anyone else by far, and he shoots a CZ. So they are not bad guns, they just do not appeal to me for my specific demands. Still, if I were to buy one, I would buy the CZ, not the IMI.
Interestingly Ken Hackathorn thought that the Norinco knockoffs of the CZ-75 were better guns than actual CZ-75s. So that could be another option.