Henry's and Vic's situation is equal. ZhouMi solo was about to happen any time.
Tao seems to be showing off his wealthy conditions a little more. I'm not a Tao stan, but I've noticed that he always shows something expensive in a time of great difficult for the group (expensive cell phone when Kris left, expensive car/bracelet when Luhan left) - somebody correct me if I'm wrong.
Lay's birthday party, he did it with his own money, he did to show his love for his fans... sorry, but I can't help thinking that it will help him a lot in future to have their support (yeah, I believe he'll drop out of SM soon --- my opinion).