Both are good looking cars, but I would give the edge to the Alabaster. It does have 6K more miles, but that is really negligible on these cars. The "pluses" for the Alabaster to me are:

Tinted windows - probably a $200 upgrade if you have someone do it.

Original luggage - that is about $100 if you were to buy it on your own.

Upgraded HU - several people have done this and if you don't like it, you still get the OEM thrown in - maybe a $130 upgrade, depending on the Sony model?

50,000 mile service is done - get the receipts to see what was involved on this service, but that could save you a couple of hundred if it was an oil change and some air filters (if you paid to have it done).

The "plus" for the SSB is it is the original owner. You can know the entire history of the car if you trust them.

Good luck Chief!!

RL