Projectors split cleanly by the job they do. Home-cinema models chase a big, detailed picture in a dark room; business and classroom units chase brightness that survives the lights being on; portable projectors trade some of both for something you can carry to the next room or venue. Match the projector to the room and the content, not to a spec sheet.

Three numbers decide it: resolution, brightness and throw. 4K suits movie walls of 100 inches and up; 3,000 to 5,000 ANSI lumens keeps a boardroom image readable in daylight; and throw ratio tells you how far back the unit must sit, with ultra-short-throw laser models now filling a 100-inch screen from around 30cm. Every projector here shows its live Rand price, stock and local warranty.