It's rare for projectors to deliver on both picture and sound, but that's exactly what the Nebula X1 does. Snap up the four-star Nebula X1 projector for £1800 at Amazon. This four-star model is a far cry from cheaper projectors such as the Xgimi MoGo 4 and the brand's own Anker Nebula Mars 3 Air. The triple-laser X1 projector boasts a 4K resolution and a claimed 3500 ANSI lumens of brightness, and it can supposedly project an image up to 300 inches in size. So, if you are looking for a 4K projector with a simple set-up and impressively punchy audio, the Nebula X1 for £1800 at Amazon could be the deal for you.