The front door that made me rethink wreaths was a plain white one on a rental I lived in years ago, no porch light worth mentioning, nothing to look at but the number plate. I put up a wreath that was barely bigger than a dinner plate and the whole entrance stopped looking like nobody lived there. That's the moment it clicked. It's not decoration so much as proof of life on a door.
The difference between a good one and a sad one comes down to how it's built under the greenery, which you can't always see in a listing photo. A cheap wire frame with thin foam clusters wired on loosely will droop within a season, and the pieces start shedding onto your porch like it's molting. A better one has a sturdier frame, usually a heavier wire or a grapevine base, with the stems and sprigs actually secured at multiple points, not just glued at the back and hoping for the best. Run your hand around the back of one before buying if you can. If things wiggle, they'll be on the ground by December.
If you don't own a single wreath, start plain. A simple evergreen or mixed foliage wreath with no bow, no ornaments, no battery pack, nothing. It works on almost any door, any time of year with a few tweaks, and it won't fight with anything else you put up later. The ones with a built in theme, all berries and plaid, are fun for exactly one season and then sit in a box the other eleven months.
Size matters more than people expect. On a standard door, something around 20 to 24 inches looks intentional. Smaller than that and it reads like an afterthought, especially from the sidewalk, which is the only distance most people ever see it from. Bigger than about 30 inches on a normal size door starts crowding the glass or the knocker, and you end up rearranging your doormat situation to compensate. In a room, the same logic applies over a mantel or a mirror, it should leave breathing space around it, not touch the frame on every side.
Where it sits well is anywhere there's a flat surface and nothing else competing for attention, a door, above a mantel, propped on a plain wall. It struggles next to anything else busy, a gallery wall, a heavily patterned door color, string lights already doing their own thing. One strong shape, a little space around it, that's the whole trick.
Before I buy one now I ask myself if I'd still like it with the porch light off and no snow on the ground, because that's most of the season it'll actually be hanging there.