If AR's aren't for you then look at a mini and/or an M1A. If semi-autos aren't for you then look at a lever action or bolt action. I would recommend that you have at least one center fire that you really like and trust, and then get a .22 to go along with that.
As a bare minimum, I think everyone should have 2 center fire rifles (one for longer ranges and one for shorter range), a .22, and a shotgun.
Just my .02