If you are happy in Alaska doing the job now I would say stay with it. Are you left seat or right seat?(apologies if you said that and I missed it) I would say PIC time in a T-Prop is worth 100% more than SIC Jet time to the majors. If you came to Mesaba now you might get the 900 but your time to upgrade would be long. I have no idea what the upgrade status will be next spring but right now we have almost 1200 pilots and the most junior upgrades (which are Saab right now) are going in the mid 600s. There are many captains below that (street caps and people who had the time last year) but you are still looking at a long time in the right seat with a not so great schedule and less pay than you make now with a 2000 mile commute.