Republic will probably be your best bet in almost any case. Google "skywest route maps" and you can see the flying we do out of different bases. Your title mentioned DTW but post mentions DFW so I'm not sure which the typo is or if you want to know about both. DTW is THE MOST Jr base on both the CA and FO side. It will get you a line the quickest and you'll have absolutely no trouble flying a minimum of 90hrs a month as rjags what the company will force you to fly anyway in the most consistently understaffed base. That said the flying is a mix. Still plenty of crap - 200 flying with short legs and 6 flights a day for barely 20hr 4 days. But they also have some pretty sweet 900 flying 2/3 legs a day with much longer legs and pretty good credit trips.

DFW is pretty attainable on the FO side tho reserve and seniority progression will take longer especially on the CA side as it's alittle more senior. 95% - 700 flying but alot of short legs and low paying 4 days and such too. Some good stuff but it takes alot of seniority to get it.