I'm shopping for a used model S to replace my VW Golf TDI (selling it back to dealer as part of emissions cheating settlement). I live in the country in central Virginia, where it's wet in the fall and spring, and can be icy and snowy during parts of the winter. As part of my daily 50 minute commute (each way) I have to cross a mountain pass, and my house is at the top of a half mile, steep gravel road. I write all that by way of explaining why I'm trying to get a clear picture of the differences between the P85, the P85+, and the 85D in terms of handling and safety in slippery driving conditions. Clearly, there is a pretty significant price difference between these three models. I also see that they all have a similar range, and similar 0-60 acceleration. I also have read that the P85+ handles really well -- but the reviews I've read all seem to be referring to how it handles on dry roads. I'm wondering if anyone can give me an idea of whether I'll get significantly better handling from a 85D in rain, snow and ice because of the AWD. And if I decide not to spend the extra money for an 85D, I'm also curious to know whether there is going to be any difference between a P85 and a P85+ in those conditions. Thanks in advance to any who take the time to weigh in.