I picked up two batches of these last summer, and most of them are still doing very well (here's another post on my freezer setup). But recently I picked up about 10 packs of these to give them a whirl. I think they might do slightly better with repeated freezings, but time will tell.

I recently bought these from Amazon.

https://www.amazon.com/dp/B0742M47V5/ref=cm_sw_r_cp_apis_1505019971853

They seal amazingly well. I put water in one and tried to get it to leak out but it stayed inside the container. I will be using them this week for the first time. They are taller when filled than my Walmart ones so I can't stack as many in the fridge but they seem like better boxes. It was supposed to be 20 boxes but there were only 19 in my shipment.

I use a combo of these from Amazon, 20 containers for $15.

https://www.amazon.com/Freshware-Containers-Compartment-Stackable-Dishwasher/dp/B073TRZ91C/

https://www.amazon.com/Enther-Containers-Compartment-Stackable-Dishwasher/dp/B0742M47V5/