Six months in, you stop seeing the clock as a clock and start hearing it, and that's when the cheap one gets exposed. The tick turns into a thing you notice at ten at night when the house goes quiet, and if it's a bad movement, you will hear every single second of your life measured out in a slightly off, slightly cheap click.
If you own zero wall clocks right now, start with something plain, a clean face, simple numbers or none at all, in a size a little bigger than feels natural, because a small clock on a big wall reads like an afterthought. A silent sweep movement is worth paying a bit more for, full stop, you do not want the ticking version in a bedroom or a quiet reading spot, you will regret it by week two. Wall clocks earn their place in kitchens, hallways, and living rooms, the rooms where you actually look up and need to know the time without checking your phone, and they suit a home that leans a little lived in and layered over one that's trying to look like a showroom. They're also quietly great in a home office or a mudroom, somewhere functional where you want the room to feel finished without adding more stuff to dust. Where they don't work is a space that's already busy, a gallery wall, a heavily patterned room, anywhere you've got a lot of frames and texture already fighting for attention, a clock there just becomes visual noise, and an ornate, oversized one in a small room will make the whole wall feel like it's trying too hard.
The difference between a clock you love and one you regret is almost never the face, it's everything behind it. Cheap ones have thin stamped metal hands, a plastic movement housing that rattles if you bump the wall, and a battery door that snaps off within a year. Good ones have weight to them, a real glass or acrylic cover instead of thin plastic that fogs and scratches, and hands that are properly balanced so the second hand doesn't stutter or lag behind. Check how the face attaches to the body, a good one is sealed or screwed, not just glued, because glued faces warp and separate in a humid bathroom or a sunny kitchen within a summer. The finish matters more up close than you'd think too, a painted metal frame that's actually cured properly won't chip the first time you take it down to change the battery.
Buy the quiet movement, buy the real glass, and stop pretending the $12 one from the bargain bin was ever going to work out.