Many people don't realize it, but semi-autos have been around just about as long as revolvers. I would not call them a "newer design" or "more modern". Both types have gone through a lot of evolution since the days of Colt Peacemakers and Mauser broom handles. Military/police requirements in a handgun are quite different from an average civilians; what is a good choice for one is not necessarily a good choice for the other. That taken into consideration, a modern Smith or Ruger wheelgun is an excellent choice, I think, for Joe Average. If you are willing and able to commit the time to practice, I would go with a 1911 as best of the best. But few of us can put in the time to master it, and if you don't it is an accident waiting to happen. And of course, YMMV.