Current shoe: asics gel sensei 2 (<--volleyball shoes?)
My only real complaint of the gel sensei 2 is the ventilation. I train and play fairly often 3-5 times/week 2-4 hrs. each session. I think having another pair of shoes will help make sure the shoe not in use can dry out.

My question is which mizuno badminton shoe? wave smash, wave gate, etc. What is the difference between the models? like wave smash more lateral support vs. wave tornado?

How do I know which shoe is which model?
all I know is it starts off with 7km-xxxxx