It is the .32 *AND* the 9x18 (Makarov) that are no longer being imported. The 9x18 woud be the CZ-83 of choice for me, if i were in the market. (Recoil for that caliber in the CZ-83 is much better than in a Makarov.)
Go for the biggest caliber you can find.
(Preferably 9x18.) The gun handles all of these rounds with minimal perceived recoil, and the .380 and 9x18 rounds are generally less expensive. Why not get more punch, less expensively?
(The .32 round versions are NOT likely to become collector guns, either. They're still being made in Europe... They're just not being imported.)