i'm just way less familiar with revolvers and i'd like to make the right choice first time.
The good news is, there's no "wrong" choice; just maybe a better choice for your own particular needs/wants. I'm with those who suggest a 4" barrel if you plan on carrying much; especially if carrying concealed and opting for the 6" model if most of your shooting will be at the range, shooting at targets. And I've never understood why the 5" revolver barrel length has never been really popular in America-maybe because what seems like the perfect compromise to some is neither fish nor fowl to others.
Good luck in making the "right choice". And welcome to The Firing Line!