I should have added that one, am also quite interested in it and have emailed the owner. Its a base model so no brembos (tho looks like it on the pics) and no Bose I think.
I only really dismissed this one when I saw the JDM at HSC for 15.5k with only 6k on her. This one is UK though, but when you put the two together the JDM dealer is bound to drop to 15k or less but the UKDM owner wasn't willing to drop further than £200.
Any real benefit to going UKDM - £500 more with 16k more miles on her?
As for colour, I would consider black (nice GT4 on ebay now 10k no reserve). I really don't like silver, hated it on Supras which put me off. Gunmetal was my choice colour when I was considering another Supra, but for some reason I just don't like it on the 350z.
As Digsy said, ALL uk cars come with brembo's
As for whether its worth going JDM, thats a hard one. I'm sceptical and would be suspicious of such low mileage on a JDM. Has it been drifting around Tokyo? Only an inspection of both cars will give you the answer. If all things are correct then the JDM should be in much better condition and the UK will have stone chips to the bonnet.
If it was me, I'd go for the uk car if its in decent condition and has been serviced correctly