Speedi Shuttle vs. Shuttle Express?

For a future Celerity Solstice cruise, 2 of us want to use a private service, one way after cruise to the Seattle airport- where we want to arrive about 10:00 am--

Unfortunately, Celebrity no longer offers luggage Valet in Seattle-- so it is just easier for us to have our own transport. For those of you who have used either of the two, not shared, how did it go?

For a future Celerity Solstice cruise, 2 of us want to use a private service, one way after cruise to the Seattle airport- where we want to arrive about 10:00 am--

Unfortunately, Celebrity no longer offers luggage Valet in Seattle-- so it is just easier for us to have our own transport. For those of you who have used either of the two, not shared, how did it go?

Used Seattle Express after June cruise. Never again. I was always under the inpression that there were shuttle right at the pier. You could buy on and when full, they would leave. Not the case. You have to reserve ahead or on the pier. There were plenty of people that did this and they were still waiting (35 Min) when we decided this is for the birds and got in a waiting taxi.