Reddit reviews Ultimate Guard Twin Flip N Tray Deck Case 160+ Standard Size XenoSkin Purple

So, here's all the details on how people store Magic cards meant to be played, with links.

The gold standard for the number of Magic cards to store is 75 or 100 double sleeved cards. As long as your container can store this many cards in one section it will be at least useful to the owner. Additionally, no one really likes storing their cards flat like your current box. Cards are much, much easier to retrieve from the container if stored edge on (top or sides exposed as opposed to your front or back, look at the pictures below).

The Boulder deck box by Ultimate guard holds exactly the preferred number of cards, down to sub millimeter tolerance. 100 cards and 75 cards

Ultra pro makes a pretty ubiquitous soft plastic box for 75 cards and 100 cards which does offer a little more wiggle room.

Ultimate guard makes nearly identical boxes. 75 cards, 100 cards.

They call their 75 card boxes 80 card boxes but that's referring to single sleeving and even single sleevers tend to appreciate the extra space for a few ancillary cards like tokens.

Also, we do not double sleeve with penny sleeves but inverted(open end at bottom of card) perfect^1 fit^2 sleeves and with regular^1 sleeves^2 over that.

https://www.tolariancommunitycollege.com/how-to-double-sleeve-your-magic-the-gathering-cards-and-why-mtg/

Being able to hold cards is great but there is also some benefit to being able to hold a whole deck box. The Arkhive is a popular example. It holds snugly 5 x 75 card boulders and 4 x 100 card boulders. It also holds soft plastic boxes but less precisely.

When storing dice they are stored separately from cards. Ultra Pro, Ultimate Guard

160 model on amazon for ~$30 https://www.amazon.com/Ultimate-Guard-Standard-XenoSkin-Purple/dp/B01LZY554H/ref=mp_s_a_1_11?keywords=ultimate+guard+flip+n+tray&qid=1573440918&sprefix=ultimate+guard+flip&sr=8-11

That one is purple but they come in other colors for sure. Mine are black and blue.

Cases are very sturdy, the magnets are strong, and I’d trust the Xenoskin on unsleeved cards (but I don’t trust my oily as hell hands, so I’ll never play unsleeved again).