we went a couple of years ago to Donny for the BTCC showdown, where Thommo took the title from muller by 1 point
We found the best viewing to be on the in-field at the old hairpin. You can see the action from coming down the Kramers, right round to the back straight.
The other place we watched from was the esses, can't see anything else, but you do see a lot of paint swapping