I hadn't thought about an F8X at all because at their current prices they would be beyond my budget even notwithstanding my wedding cost overrun. But that might change depending on rate of depreciation in 12-18 months, so it only occurred to me when I started to consider waiting until next year to buy instead of this year that it could become an option at that point.
In a lot of ways it seems like a much more sensible option than either of the preceding generations given the lower running costs. If the claimed 34 mpg (combined) is accurate, then that is more economical than I am currently getting on my 318Ci.