I've been online at an ACMI for 3 months.
Trip lengths have varied from 8 to 16 days. The average has been about 14. It is much better than a regional in my opinion, because you don't have to worry about commuting or crash-pads no matter where you live and are based. Sometimes you get 14 or 15 consecutive days off in a month, which is better than a vacation at most airlines.
Commuting? There really is none. You get assigned a trip and they fly you via positive space airline from where you live to wherever that trip starts. They get you there 9 hours prior to departure and provide you with a hotel room (assuming you don't live where the trip starts).
Days off? They get you for 17 days, extendable up to 20. Some months I've only worked 15-16 days. The trips, to me, go quickly. I have more time off than I know what to do with. 1st year take home Pay is commensurate with 7th year RJ captain at my previous job (~$5,000/month net).
There is less stress in my opinion....1 leg every 2 days instead of 5 every day. No flight attendant drama. No whiny passengers. Good airplanes. Friendly crews.