I live in Seattle but would rather commute with Eagle (ORD) than work a slave schedule with Horizon. As a senior FO (five years) I got some very good time off and still had almost 90 hrs a month.
Junior captain now and back on reserve out of ORD but SEA ORD commute is one of the best commutes in the industry. Long flights but all mainline and 13 to 16 each way per day. Makes life easy..
I would guess the senior Horizon pilots can get a better schedule though.