In reference to wangdoodle's comment I will add. The differences in RCIA programs will be like the differences in the churches themselves. Some are very conservative and traditional (always, with the Dominicans) and some are quite liberal.
...so you can see where I lean
That's not to say, though, that Franciscans are liberal. Some are, some aren't. Generally speaking, they are good too. All are good, really, it's just a matter of style preference.
Take your time. Go to Mass at a variety of local Roman Catholic Churches. At the one that you like the most - or the one where you like the Priest(s) the most, check into the RCIA program there.