It depends on who playing as well stadium. It sporns another question as to what is the most intense football experience from an atmosphere standpoint. It may be a WC qualifer, a cup final or league derby.
I actually prefer to watch a champs league final on tv cause i want to see all the replays as i more focused on the game itself. I love the english stadium experience tho.
Give me Boca Juniors hosting Corinthians in a copa libertadores final in La Bombanera where the whole experience of the perfect football clash, the vibrating vertical stands and passionate fans...... a bredrin of mine went to a boca game once and said that the stadium doesn't tremble, IT BEATS