Could someone give me a quick comparison of the Amtrak bus, Amtrak train, and Quickcoach from Vancouver to Seattle?

What are the pluses and minuses of each?
Thanks so much.

I need this info too, please.

I need this info too and also the best way to get from the airport in Vancouver to the main train station to catch the Cascades line to Seattle.

Quick Shuttle goes between the Seattle Airport, downtown Seattle, the Vancouver Airport and downtown Vancouver, back and forth, many times per day.

The Amtrak bus, I believe, just takes you from the bus station in Seattle to Vancouver's bus station, both are outside of downtown I believe. It also goes back and forth several times per day.

The Amtrak train would be the most scenic, but unfortunately there's only one trail per day. The Vancouver-bound train leaves in the morning, and the Seattle-bound train leaves in the evening. It's the least flexible out of the options. It favours people doing daytrips to Vancouver from Seattle, but not the other way around.

Thank you so much for your info.