Well I am probably as qualified as anyone to answer the question as I have worked for both. I was at Coex for 10 months before the furlough and have been at CHQ for 15 months.
First off let me say this, both airlines are CLASS ACTS! They both have wonderful people working there and you should be thrilled to have a job offer at either of them. Understand this as well, any comments I make will be based on my experience alone, and yours may differ. Things may change dramatically at XJT with their new contract when it gets signed. Disclaimers aside, there is no comparison, CHQ blows XJT away as a place to work. The QOL is excellent, the schedules are very very good (I am p1ssed if I don't get at least 16 days off and every weekend off, I haven't been p1ssed in a while), for me the choice of bases works out well. I could go on and on, but you can find all the pros and cons with a search of this forum. That is not to say that XJT is a bad place, it is not! As a matter of fact I had planned all along on accepting my recall, it just turned out that CHQ was better for my situation. As for the future, WHO KNOWS. I think XJT and CHQ will be fantastic places to spend time at. I know that I miss all my friends at XJT greatly and wish them the BEST of luck with their new contract. You will not go wrong with either of them given the choice. Therefore, TAKE THE FIRST CLASS DATE!
Good Luck,
KnightRider