For Summoner Wars 2nd edition, I switched from using ziploc baggies to the S37 Perfect Fit Deck Boxes. I knew there would be an obvious upgrade, but I got much more than I expected. They fit fantastically, and so stacked perfectly in base game's box. And with all the many, many factions, the price on these is perfect.
So then I turned my attention towards my Magic the Gathering Cubes. I've been using BCW card storage bins, and those work great for a safe and durable place to store the cards, but it was annoying and awkward when pulling out all the cards for a cube. Then I remembered Burger Tokens! I didn't need something elaborate, just something sturdy that would section out parts of the cube to make them easy to remove and replace. For me, the S120 Perfect Fit Deck Boxes were exactly what I wanted. I can easily fit a Twobert Cube in two of those, and keep land packs in the S37s, and they fit perfectly in the card bins!
I highly recommend them!