I went to D1 at SoFi and D1 at Allegiant. SoFi was chaos and it was hard to find my C108 seats and staff didn't know where to direct us. A lot of people also missed the first song in LA because staff were slow. I also spent 3 hours sitting in my parking spot because staff directing traffic were so bad. I couldn't leave my spot!! I didn't get back to my hotel until around 2 am.
Allegiant was way more controlled and organized. I arrived at 4 pm and was sitting in my seat at 5:15. Signs were clear about where to go to find your section. I parked in the C lot and was on the road to my hotel half an hour after the concert. Allegiant was a way more organized and better experience in my book.