New Balance Women's 608 V5 Casual Comfort Cross Trainer, White/Light Blue, 6.5

How is the sole heel support for workers that stand the entire day?

Are they a lightweight shoes?? Plus are they good for bunions ????

What is the difference between this model and the 608v4, which is marked "Unavailable". Can I switch and expect the 604v5 to fit the same way?

The description says CrossFit, are these good for high impact workouts?