I’d definitely lean towards the SEA run. Living on the West Coast, I have a number of clients in the Bay Area, so I’ve spent more than enough time in that area to want to go back unless that run results in an avalanche of AA EQD/EQM compared to the SEA run, or if it ends up with a much more “scenic” run.
The LAS boomerang also adds an intriguing twist. Yes, I’ve been to Vegas lots of times, but the day that I’ve run out of things to do there, or simply no longer want to visit, then dump me in a bath chair and wheel me to the nearest care home!