More money, yes, but also a better contract, by far, with better work rules. Also the flying varies from plane to plane, and with a more varied fleet you can have more options for the types of schedules you want to fly (once you build some seniority and are able to bid to other equipment). This, along with the better work rules, makes it a very different job than the regionals, despite doing essentially the same work (flying passengers under 121).

Also, more money. Did I mention the money?