Has anyone tried Sidecar on multiple different iPads? Does the quality differ, and if so, by how much? How does it compare to Duet Display and Luna Display? What about WiFi vs wired? Also, what about the iPad Air 2? Developers keep saying that Apple's Sidecar implementation may be dependent upon HEVC encoding support on the most Mac, but it should be noted that Sidecar does work on the A8X-endowed iPad Air 2, even though that iPad does not support hardware HEVC decode. Consequently, it would be interesting to directly compare Sidecar on the iPad Air 2 (A8X, no hardware HEVC decode) vs the iPad 2017 (A9, hardware HEVC decode).