Belly bands and support belts

Me

What is a good belly band or support belt. I have Bella Bands and I do like them however the bigger my belly gets the less support I feel they give.

I'm a teacher so I'm on my feet and moving around quite a bit and would love to have optimal support but also something that will go under my clothes without looking too odd.

Lastly what's a good support belt/ waist trainer for after baby has arrived??