Last year at Brickworld, the Lego Stores had the green Pick-A-Brick tub, which were really convenient compared to the cups. Unfortunately, the tubs were a temporary deal, and they were discontinued. It looked like this year everyone would be back to filling cups. However, I was surprised to see that they also had some white boxes which could be used for Pick-A-Brick.

 Of course, I was interested in how the two compared in capacity. So, I did a little test.

I had this box of parts:

And wondered how much of this tub it would fill:

 turns out, they're about the same: