I have (since new) a 2000 Catalina 320 and really like the boat. I don't think you would go wrong with it. However, I'm sure that the Hunter is also a nice boat. Bottomline, either one will be fine. Assuming both are in good condition, just pick the one that you think looks the best, and will sail the best as you intend to use it. Too bad all decisions aren't like this..
Once again (in another post), we see the nonsense about Catalina and Hunter not being of sufficient quality..Beneteau was missed this time. Both boats are going to be fine, of course if you want real quality (i.e. a Bentley? vs Ford or Cheverolet or Toyoda), then buy a Morris, Tarton, or some similar boat at over twice the cost. Or buy one of those really old quality boats from yesteryear and spend a fortune trying to restore it...let's see if it's quality, why do I have to spend money to restore?).