BarryLee is right in that the S&W J-frame is very popular. The Ruger LCR is also popular.
As far as the semi v. revolver issue, there's certainly nothing wrong with choosing a revolver. Plenty of our members CC revolvers on a daily basis. They do have a lower capacity and fatter profile, but you also don't have to worry about magazines or having a slide pushed out of battery.
How to carry: it depends on your mode of dress. Don't overlook the value of a quality holster and an honest-to-goodness gun belt. Being able to carry comfortably goes a long way to making carrying every day a reality.
A gunfight is not the time to learn new skills.
If you ever have a real need for more than a couple of magazines, your problem is not a shortage of magazines. It's a shortage of people on your side of the argument. -- Art Eatman