Im not certain of alternatives, but I do have the 530 unit and it’s excellent. While yes, I can only use it on a 530/430 unit in the sim, it also makes an excellent 2nd small screem for items such as VatSim. And while you would think thats silly, the buttons still are mapped to the 530…. So I can fly in a 172 using the buttons to navigate the unit in the sim, I have Vatsim on that screen…
Or its perfect in VR, because the buttons are in right spot….