If you compete and want to shoot production class, your price range would just about get you into a Shadow 2 Orange. The Orange in the S2 line adds hand fitted slide/barrel, a unique to the Orange slide, barrel bushing, polished barrel and some factory trigger work. I don't know that there is a better choice in the CZ lineup that is production legal.
If you're just looking for a range gun and not competing, it opens up the choices to include guns like the Checkmate. But they are well above your price range.