Was able to get my hands on a couple of tickets to see the Broncos take on the Texans in December 2012. Don't recall the row but we were in the first 20 rows which was icing on the cake. I feel like I can sit anywhere in this stadium and enjoy the view of the field and still be able to tell what's going on. After row 20 or so, there is another set of 20 or so rows that provide a view from a little bit higher and further back. Those would be great seats to have as well.
Almost every seat in our section sat just inside the 30 yard line so we were very much "midfield". Were in close proximity to the Broncos players as they stood on the sideline. All of the seats are colored blue with the first few rows having an orange tint to their seats, likely to denote a difference in price. The Broncos have a strong and up tempo offense so sitting this close will definitely be an experience for you, especially if it's your first NFL game.

This stadium definitely has a lot to distinguish it from all of the others. The North end zone is mountainous and completely enclosed while the south end zone is more open and has a giant Bronco statue atop the scoreboard. There are 3 jumbo trons made available to fans, most stadiums only has 2, Heinz Field in Pittsburgh only has 1. You'll also be able to see the downtown Denver skyline from some of the upper level seats and then some other seats allows fans to see the mountains in the distance which are beautiful when it has snowed. Very easy to get to being so close to I-25 too. This is one NFL stadium you won't want to leave off of your bucket list of ones to visit.