I saw all four together when they played in London a few years back. They were amazing. Doubt that will happen again so really glad I went when I did. It does really annoy me when bands won't just put their differences to one side for the fans. It's a job. You don't have to like each other just be professional get on with it, get paid, go home. Most importantly give the people who made you successful in the first place what they want to see and send them off with a smile on their faces. In 2017 it's 40 years since Tbe Supremes split up. Ever year I pray that Mary will make those calls (And I don't even care is Diana is involved or not).