I am new here but lurked for a few days before posting to get a feel for the land.

I am a new business (frequent) traveler. I've traveled a few times a year for the past 5 years but now it will be closer to 15 times a year so I am looking to take advantage.

I live equidistant between Logan (Boston) and Manchester (in NH). Neither is a hub for a major airline.

My trips will be domestic - for instance this year I am planning on Texas, Florida, and Ohio.

I'd like to be able to earn toward elite status and upgrades while also saving for potential family vacations and international trips.

Southwest flies a ton out of Manchester but their plan doesn't seem as comprehensive.

Does anyone have any recommendations on which airline to hook up with? I currently don't have any loyalties but I am intrigued by lifetime memberships.