Any additional context? East Coast / West Coast? I would argue the one where you can live in base would be best but I suspect you already know that.

RPA has a union (if that's worth anything. Sometimes it isn't),
No junior manning. As a line holder, any reassignment must return you to base within 2hrs of your originally scheduled release.
We have Long Call Reserve (dunno if SKW has that or not).
No forced upgrades, even with the new contract.
No CRJs... if that matters.
Max premium pay is 200%, SKW offers 300%.
No airport reserve/stand-by* (it's in the contract but not used because of the stipulations)

Thats all I got off hand for now.