I was looking a a local gun store and they had a pretty nice (looking, anyway) Dan Wesson Patriot(?) for $650. Not being familiar with Dan Wessons I decided to do a little research. What's the deal with the CZ and Pre-CZ models? Who made them before CZ? Are there major differences? Is one better than the other? Anything I should look for or avoid in one of these used? Thanks for the help.