Hi all! Long time lurker, first time poster. First off, I just want to say thank you to everyone on this forum. The knowledge that i've received on my journey to purchasing my first Tesla has been great, and i've learned a lot from all your experiences and anecdotes. So I have narrowed down the options on my model S, and need some last minute advice between a couple. I have been going back and forth on AWD or RWD. I've made the decision that if i upgrade to AWD (60D), I will forego the upfront purchase of AP. My logic is this: I can always add AP after the fact (albeit for a premium), while AWD can't be added post purchase (well, maybe it could, but not easily). I live in socal and don't do a ton of freeway driving. I live in the hills (if you can call them that) of inland north San Diego County (Vista, CA if anyone is familiar with the area). My morning commute is about 10 miles one way, and no freeways. I test drove both the D and the non-D model. I liked the way the D model felt, but the $5K cost to upgrade does not come cheap. So, my question(s): being that i'm located in socal and weather isn't an issue, is the D worth it for pure driving enjoyment and pleasure? Enough to forego AP for a while until i can save up for it and pay in cash? Also, i've read that there is a 30 day trial on AP for those who don't order it with the car, is this still true? I realize this is highly individual, but I would love to hear some personal feedback and any advice on my impending decision. Here's my build: Midnight Silver All Glass Roof Textile Seats Standard interior Standard Sound Thanks everyone!