I would probably say Miami. Although, I had the best experience this last year in the games against UCLA and NW.
During the UCLA game, the place was electric! The energy was so good! Well, until the second half. Despite the outcome, I will always remember how electric the stadium was. I would say watch out for which game will have the "alternate jersey". I know we lost the UCLA game, but still a great experience. Also, the Wiscy game turned out to be a good one. They seem to pick the right game for those "alternate jersey" games. I know we have only had two so far, and I assume they'll do it again. The crowd just seems to get extra pumped before hand.
The NW game is obvious, with the hail mary and all. But even before the hail mary, you could tell the defense was feeding off of the crowds energy and they played lights out when they had to at the end there. After Armstrong threw that pick and gave NW a short field. The crowd got really into it and the defense held them to only a field goal. Which ended up being huge. Anyway, that whole second half, the experience was great!
I honestly, wouldn't go to a "guaranteed win" game. I love seeing us win, but the experience just isn't loud and electric like it is during those close games, or those games that are hyped up. I am not complaining about our lack of loudness, just more of a "we don't need to be loud", because well, we don't. There is just something special in the air for those big games. Either way, I still love going to the games. It only happens 7-8 times a year, and it certainly is something special.