In most cases the Bisset Bamboo is the best choice, closely followed by the Golden Crookstem.
Yellow Groove is also a good choice for screening especially in exposed conditions. Black bamboo works too, but not quite as effectively and as fast as the others mentioned.
The bundle is a great option if you have a larger area to cover.
These bamboo have their own uses. The Timber Bamboo becomes a spectacular, tall bamboo with thick canes. The Arrow has a tropical look and is good to 2/3m but generally has the most spread. The Seconds Bamboo, are excellent value.
These Fargesia varieties are lovely bamboo in their own right and become very full bushy plants. But they are slow to grow and will take quite some years to become a significant size.
Fargesia 'Asian Wonder'
Root barrier, compost, and plant pots.
(Sold by the metre)
Perfect for Bamboo