I'll start this as someone who really does not like listening to live recordings of songs. Most of the time they feel quite annoying especially when the crowd is screaming over half the track(Cheap Trick - I Want You To Want Me, not counting. That is the definitive version).
But for me the best concert I've been to (in my very limited capacity) was Roger Waters - The Wall tour. I went to see it 2013 August in Warsaw and it was amazing. I have to say that I'm very lucky to have step-father who is a very big Pink Floyd fan and got us front row seats(if I remember correctly in like 60K people). Sitting there watching the show was amazing. Seeing everything that went down on the stage, from the little kids singing the "Another Brick In The Wall" while their singing coach was below the stage guiding them to the wall breaking down.
That concert was amazing. Honestly that whole day was amazing from start to finish.
So what was you're best, favorite or most memorable concert?