Hi, I have had the pleasure of owning 3 F Types, 2 of which were convertibles and also a 4.2 XKR convertible. Without a doubt the XKR is a much more comfortable car for touring long distance in my opinion, the later 5.0 versions have a high level of specification equal or superior in some cases to the F Type. The boot space in both types of convertible is limited . The XKR being larger, but when the roof is down the space is reduced unlike that of the F Type which does not have a stowable partition in the boot.
I also know that some replacement components for the XKRs are no longer available from JLR at all, these include the later XKR models, for instance the rear subframes are no longer manufactured, and some electrical modules are also affected. Maybe a factor worth considering.
I do miss the ride quality of the XKR, my wife is not a fan of my FType for this reason.
The 5.0 FType is an impressive performer, but a completely different driving experience to the XKR. I would like to own one of each type but don't have the space!!