We bought tickets for Wolleck - Tribune 22.
Upside: It's cheap. Just €63/seat.
Downside: There's no roof. However that also has a benefit in that only 3 of us had tickets. So once we were in we dropped the pass down to the 4th man, who then got in! There were plenty of empty seats.
If you are in the lower numbered seats you cannot see down the track due to the big screen, but some might argue that this is a big plus point. If you get the lower letters [A, B, C, D] and higher numbers then you'll be ok.
Would I have bought a g'stand seat if this year's weren't so cheap [actually paid €160 for 3]? No.
HTH
Paul.