Here in DK I have never ever heard of a Ferrari with more than 35,000 km (appr. 23,000 miles) on the clock.
I drove an old 1980-something Testarossa last year, and it had 30,000 km on the meter.
The two 360s I've tried both only came out on sundays when then moon alignjed perfectly with the stars and the weather forecast said "perfect weather then next week or you'll get your money back".
Older F-models have low milage because the build-quality back then sucked, and hence people kept their cars in the garage.
Nowadays the built-quality is a whole lot better (although my buddy's 360 had a load of strange problems) and I bet the 430 is every bit as good as the experts (including Mr. Troll

and other owners) say.
Problems is that the old habit of not driving their F-cars stick with new F-owners and their newer models.
I'm pretty sure the quality of an F is very very fine, but I'm also sure that most F-cars are just sitting in their respective garages looking pretty because the owners are afraid of depreciation...or maybe don't really trust the F- built quality.
I don't know what mechanisms stop F-owners from enjoying their great machinews more, but there can only be three reasons for it as I see it:
1) F-owners generally buy Fs as investment or as jewellery
2) F-owners don't trust the F build quality
3) F-owners fear depreciation. If most used Fs have low milage, who wants to be the first F-owner with a hi-milage F?
Just out of curiousity:
Has anyone actually heard of or know of an F with more than 50,000 miles on the clock?