Update: I finally just gave up on DL (for the first time EVER!) for an upcoming trip between SFO and LAX. Whereas DL was pricing at $217 r/t for the times that I wanted, I could get flights for roughly the same times for $122 on AS/VX. That's almost double the price! I was on the fence about paying an extra $20 each way for a seat up front, but for a flight that's roughly 55 minutes, this seemed kind of extravagant. (It definitely feels weird to be in the last couple rows of the aircraft!). I've never flown VX before, so I guess there's always a first time, especially since it's slowly being folded into AS.
Thankfully, T2 and T1 are connected airside at SFO, so I can at least use the SC before my flight.