The question I get most is whether a cabinet with a door is worth it over open shelving, and yes, every time, because a door means you get to hide the mess instead of styling around it forever. Open shelves look great for about three weeks and then they're just a shrine to your clutter. A door buys you room to breathe and a little mystery, which every room needs more of than people admit.
When you're standing in front of one in a shop, or it's just arrived and you're unwrapping it in the hallway, check the door first. Open and close it a few times. A good one swings smooth and shuts with a quiet, solid click, not a rattle, not a slam. Look at the hinges, they should be set into the frame, not just screwed on looking like an afterthought. Run your hand along the inside edges where the door meets the cabinet, there shouldn't be gaps wide enough to see daylight through, and the color or finish should match front to back, not just on the parts people actually look at. Cheap ones cut corners exactly where you can't see them until you're living with it.
The difference between a cabinet that earns its spot in a room and one that becomes a regret shows up in the materials and how they're put together. Solid wood, a good plywood, or a proper veneer over MDF will take knocks and still look like something, while cheap laminate chips at the corner the first time a vacuum bumps it and never looks right again. Dovetail or mortise and tenon joints at the corners mean the thing is built to hold weight and survive being dragged across a floor by someone in a hurry, which, let's be honest, is most moving days. The finish matters too, a hand rubbed or lacquered surface ages into something with character, while a thin sprayed coat just gets dull and scratched and sad. And don't skip the color story here, a cabinet in a deep color, a navy, a forest green, even a warm terracotta, reads as furniture, not storage. White melamine reads as a filing cabinet that got lost.
Over the years a well made cabinet gets better, the wood deepens, the hardware gets a little patina, the door still shuts the same way it did on day one if you keep the hinges tightened and wipe it down with something gentle instead of anything harsh. Keep it out of direct sun if the finish is a color you love, because fading is real and it's not even. The best ones develop a kind of worn in confidence, the door handle smoothed from years of hands, which is a far better look than brand new ever was.