Begonias - Cascade type

Hi,

Looking to get some of the widely offered Mixed Cascading Begonias for baskets on a mainly shaded wall.

Is it better to get the Tubers or the Plug plants that most suppliers offer ?
We have heat in the greenhosue so can grow on either.

You Garden seem to have low prices and think we read in the past about them in GC but cannot remember if it was good or bad comment ?

 

When I used to grow them when I had a greenhouse I had very good results with plug plants.