Thanks Ladies!!
I'll definatly try the models you've suggested. I definatly need a shoe that can support the lateral moves like the ski/skater moves in some of the cardio workouts.
I do the Firm as well as Cathe and the other day I was doing MCB with the step and scoop move. Well, it's a lateral move and I felt my Nike totally blow out on the side. So it's time to bury these and get some new.
As everyone has suggested the NB, I'll try those out first. And again, thanks for offering model numbers. That makes it so much easier to shop!!