RRS P 530 or RRS D 350

Moin together, I’m new here in the forum. If any of you have a link to an already existing talk about the topic “Buy decision between RRS P 530 or RRS D 350 “, then maybe all my questions are unnecessary. I want to replace my quite good Benz E 400 D AT with appealing motorization (240 hp) with an SUV of RR. I liked in the car dealership of the RRS. Here there is the D 350 or the P 530, the latter possibly flatters the own ego a little more without doing so. Are there serious differences besides a little more power? Are there any problems with the vehicles. I have none with the Benz, not even with the airmatics. What about the consumption? D 350 at approx. 8 – 10 liters? P 530 at 9 – 13 liters? I would also choose the four-wheel steering with the D 350 and the Meridian package with both if it is really necessary and brings advantages. I am pleased to hear from you…