I grew up in Chalmette my whole life, after Katrina, it is not the same. It used to be very nice, now you have to be careful as it has down graded a lot. Metairie and Kenner or over on the North Shore like Slidell or Covington is much better. I believe it depends on the person and the amenities you would like to have around you.
My advice is to walk into walmart in Chalmette and the above places and that should tell you where you will feel comfortable living.