+1. I personally would prefer a JDM spec with lower mileage than a UK car.
The only thing I have found is that Nissan dealers are really funny with you if you have a JDM (infact absolute a***holes) but I wouldn't recomend you use Nissan anyway, there are much better garages that you can find through traders on this forum.
Have a search for differences in JDM vs Uk, a couple being that the JDM satnav wont work in the UK (can be swapped out) and the stock suspension is harder, stock exhaust is quieter and stock fuel tank is smaller.
I love my JDM Zed though