Hetty,
You are going to like the plain green one. I stayed away from the plain green for many years. I finally purchased one last year and went ahead and purchased another this spring.
Anne,
'Prince Albert' is a very fast growing Ti. I think I started my log 3 years ago and the plant now is 9' tall. Another very fast grower is 'Rooster Tail'
Leisha
'Rooster Tail'