After a bit of reading, I'm looking at either an ES or an EX (because they don't do a 5 door Type R

). According to the catalogue, the differences appear to be:
ES - glass roof as standard
EX - 17" wheels, Satnav/
HFT, rear parking sensors and
HID lights (what exactly are they anyway?)
I already have a standalone satnav (which has the benefit of a speed camera database, not sure if the EX version has that), and to be honest, I don't make or receive that many phone calls (and besides, I can usually give the phone to my wife

). So, it'd basically come down to 17" wheels vs glass roof. Are there any other differences that I've missed? Any other input from people that have gone through the process themselves?
Thanks

.