The three most popular ways to light a ceiling look similar in a rendering and behave completely differently in real life. An LED panel floods the room with even, office-grade light. Downlights draw a rhythm of points across the ceiling and let you accent things. A flush ceiling light does what it has done for a century: it glows softly from the middle of the ceiling and requires no remodelling at all. Which one for the kitchen, which for the bathroom, and which to avoid on a concrete slab? We compare light uniformity, mounting requirements, costs and servicing – so the decision can be made once, before the renovation, not after it.