I gave up 4 Touchdown Club seats in west side upper deck (above the press box) to get 4 seats in the new South Zone. As a result, I was invited to sit in the existing "Zone" for the A-Day game. I do not regret my decision (even with the steep additional cost).
The view of the field is just fine -- obviously it's "north and south" rather than "end to end" like you have with sideline seats, but from the high end zone seats, you've got a view of the entire field, and even from 40+ rows up, it all seemed lots closer than my upper deck seats. The only time I felt like I wasn't seeing as much is when the teams scrimmaged from inside the 20 on the opposite end of the field -- depth perception gets lost, and it's hard to distinguish a 2 yard gain from a 10 yard gain, other than crowd reaction.
With that said, the amenities in The Zone skybox are fantastic. My wife said the beautiful, clean bathrooms alone are worth whatever extra we're paying for those seats! It's climate controlled, carpeted, with pregame meal and all you can eat and drink from 2 hours before kickoff to 30 minutes after the game ends. Closed circuit television throughout, and a locker in the "pouring room" in case you want to stock it with your alcoholic beverage of choice.
On top of all that, the South Zone seats will most often be in the shade, while The Zone in the north end is always looking right into the sun. I can't wait for the grand opening of the South Zone on August 20 (there's an invitation-only "open house" planned) and then for the start of the season on September 4!!