I would buy the XFR-S. Practicality of a saloon car but with that 5 litre charger under the bonnet, i loved testing it. That said, if the new XE gets the 5 litre charger put into it (which i'm sure it will :) } then i would have that as the handling of the XE is just sublime.
I think, Claws, You have to buy an adpater wiring harness. It wasnt until 2004 I believe when most if not all car came with standard ISO wiring to fit any after market radio. Ive had to buy an adapter lead of of ebay. Converts the current leads behind the radio to standard ISO so I can fit any aftermarket radio I like.