On the subject of depreciation - if just picked up a one year old D3 for pretty much half price - from a main dealer. The previous one was on a Freedom deal - went back because the GFV was about £5000 MORE than it was worth.
And finally - taking them off road? Absolutely fantastic car for this. The electronics everyone hates makes it soooo easy for novices like me to take them places I couldn't go with a Defender