Detroit is going to grow at 9E as Daddy D winds down GoJet there. Then it will likely stagnate. Who knows how CVG opening will affect that. We have a lot of senior guys in DTW, particularly on the CA side. From what I've gathered, DTW is far more junior for SkyWest. Make that a consideration.
I would lean SkyWest over 9E, don't listen to anyone that says the DGI is worth anything. Get in to SkyWest and fly your butt off. Learn as much as you can, upgrade fast, build PIC. Round out your resume with volunteering, lcp, acp, or something else that perks your interest. Then get out! 9E seems to be the place where Delta hopes go to die. At last count YTD less than a quarter of those that moved on from 9E went to widget.
Enjoy the ride.