Neither is necessarily a really good choice right now. Both ASA and PCL are in negotiations right now and could see a strike in the next couple of years. I'll let the ASA guys speak to their quality of life, but I can tell you that QOL at PCL isn't that great. The pay is even worse. Upgrade at both airlines will be quite a while. I estimate at least a 5 year upgrade for newhires at PCL right now. If I had to choose, I'd probably go with ASA unless you want to live in one of PCL's hubs. (MSP, DTW, or MEM) Good luck with the decision.