I'd go with skywest, I live in the bay area, will be starting my class in June 3rd. And i have alot of choices in the west coast. My main goal is also SFO. But I know I might need to commute to either LAX, PSP, or FAT. But those are easy 1 hour commutes instead of a 2.5 to DFW or ORD and 4.5 to LGA.
I was also strongly committed to going to Envoy, but the way the recruiter presented the company in the presentation during my interview date literally stating they were 13% below industry avg in pay and that the company has no interest in bringing up pay cause they're not having issues recruiting, that literally made me shift my sight on other regionals. The flow is a great thing to keep as a back up, but I think that's their only selling point.