I'm going to see Shelter in November, crazy hyped!
I first saw Worlds at Bestival a few months ago and that's gotta be the #1 spot for me. I met up with a bunch of people from /r/porterrobinson and we hung out at the front right at the rail all day from noon til Porter closed. Madeon went on right before Porter and did a great show there too. Back to back they were amazing, I can't wait to see them play together.
Normally I stick with whoever I go to a show with, but at Bestival I met so many new people and we all became best friends by the time Porter came on, I still have some of them on Facebook and plan to meet some at whatever Shelter shows we can manage to all make it to.
Obviously Porter's show is renowned for being "life changing" and I know the term seems crazy and maybe overused but that's exactly what it was. It was on a whole other level compared to any other live show I've ever experienced for sure.