The Insta360 X4 is a great deal at this price. Even at full price, it's our favorite budget 360 camera thanks to great 1/2-inch sensors, which can capture up to 8K video. The dynamic range is very good compared to everything but the newer Insta360 X5, which is better. The other major thing you give up compared to the X5 is PureVideo mode, which really helps in low light. The low-light capabilities of the X4 are, frankly, dreadful. Still, you're saving $165 off the price of the X5, in light of that these are not huge sacrifices.
The X4 has good battery life and, like the X5, can be used in single-lens mode, giving you a 4K action camera in addition to your 360 camera.
