SQ5 Old shape must haves

[Bluesmurff09]

Hi,

I'm looking to purchase one of these in standard or plus spec.

Are there any must have extras when purchasing.

I'd like B&O if much better than standard set up and the better Nav if it has full postcode function. Id also prefer 21s as they look much nicer.

I will probably remap it too and I'd be interested to hear if it's worth it.

Thoughts?