There are two types of projector for home, home entertainment projector and home theatre projector.
Home projector is usually brighter - above 3000 lumens, it usually does not require a darkened room. It usually have a faster response time. It's suitable for watching movies as well as playing sport videos and play games ( PS4, Xbox, Nintendo, PC). Some model have a dedicated sport mode and some are specifically designed for gaming.
Home Theatre projectors usually are dimmer but have a higher contrast ratio, it requires to be used in a room with controlled lighting environment. (Dimmable lighting, room with blinds or curtains..etc)
4k is a new technology that has been on the market recently, it has 4 times the resolution of a Full Hd projector. With 4k HDR technology, it produce a much better picture with deeper black and vivid colour than a Full Hd projector. Only until recent months, 4k projector is becoming more affordable. With $2200, you can get a 4k projector nowadays.
For more information:
Tel: 1300 652 889, NSW (02) 8004 8998, VIC (03) 8833 7238, QLD (07) 3077 8813, SA (08) 7131 1166, WA (08) 6102 6566