Based on my readings on the 7er forums, lease deals on 7ers in the US tend to be a better overall option than buying outright, with high residuals and low interest - unless sub-prime lending has tanked that option in the last few years. On the other hand, over here the residuals they give on PCPs mean that handing it back at the end of the period is giving money away. On paper it seems like a few inches here and there, but side by side (and inside) those few inches count, especially in LWB form. The X6 looks big because of it's chunky style and height, the 7er is the bigger car. Apart from the size though, it's the waft and plushness that did it for me over the 5er. You can spec certain things that help the 5er out, but it's always going to be the more 'dynamic' BMW. The only issue I have parking is the length, often hanging way over the end of spots, particularly in multi-storeys. Surround-view is a must, and regular city manoeuvring is on the cards 4WS is supposed to be a nice option as well.