Personally out of those two choices. The xdm. Much nicer feel and shooting compared to the gloce. I don't have much experience with the cz. Friend of mine said it felt similar to my h&k usp. But if that is the case then I wouldn't like it. You might but based off what he was telling me I couldn't recommend it off of how I feel about the h&k.
Have you looked at the m&p. I like mine a lot better than my xd. And it isn't but a couple of dollars more than the xd and is cheaper than the glocks...at least here