For me in zone 5/6 after a few frosts the Mekong was the first to succumb to winter.
The Basjoo lasted a couple more weeks of frosts before a hard frost stopped it completely.
Both are awesome hardy low maintenance landscape plants that add an instant tropical feel for years to come.
Then.

Mekong giant on right
by
Hostafarian,
on Flickr
Now.

Basjoo and Mekong
by
Hostafarian,
on Flickr