Whatever gets you in the quickest if you're trying to move quick. Then worry about bases. Check the SkyWest website for bases for the fleets. Not sure if they have it updated, but I imagine so. CRJ is "dying" but it will be around for quite a while longer. I flew both and the ERJ is better in a lot of ways, but the CRJ is also fine. If you like DMA (Aspen and Eagle) flying they both do it. CRJ mostly Aspen with some Eagle, ERJ only Eagle. From friends who are still there, upgrade times seem pretty even. They're hurting for captains either way. Training I found to be a lot nicer on the ERJ. Just different atmosphere and you train in DEN, vs SLC in the CRJ. Not that the training in the CRJ is bad, the vibe just seemed different. But at the end of the day you can't go wrong either way. If you're really set on SKW enjoy it. The crews are the best part. Flying is flying no matter where you go.