My vote DTW320B. Being top page on MSP220B sounds great, but as you said, it's not been fleshed out, less trip diversity, and slightly fewer bases for potential OOB flying (read front/back end DH) opportunities. Of course the OOB stuff will get better when we finally put this m7 madness behind us, if we don't move OOBWS that is. Even if you're not on the the top page, top 10% is an amazing place to be. I thought life was good when I hit 30%, but being at 8-15% was insanely better. Pick your trips, pick your days off, pick your vacations, trip buys, first shot at GS/SS/QS/etc, first shot at dropping trips. Wife wants to know if you can attend an event 6 months from now? No problem, at that seniority, you know you have it off. If you're not going to go WB, I vote to go where you're the highest seniority in the 320.