When you are paying top dollar for a new car who wants a recon part on it?
Plus, judging by the experience the majority here in the UK have with the Nissan dealer network, I wouldn't trust most of them to undertake any major work on a Zed. Marshalls may be different but most of them are used to working on Micras and not doing such a great job of that.
A new car should be perfect - that is what you pay for. A repaired car is not a new car in my book, however well repaired it is.
+1. Totally understand though why DJ doesn't want to wait. What a sh1t situation to be in. When you're spending that much you have to expect more that just repair/replace.