Looking at Adorama, they have a new D7000 body for $896, refurb for $749, and used (E+ condition) for $719. If you’re thinking of using this as primary for a while, and then backup, I think I’d go with the refurb. It comes with a Nikon 90-day warranty, which I believe means it can’t be grey market, but it would be worth asking first. Either way, be aware the D7000 uses the EN-EL15 battery, different from the D90, so factor the cost of a spare into your plans. Don’t sweat the over-thinking, you definitely want a reliable piece of equipment in your bag. My old Minolta film camera gave out years ago on my once-in-a-lifetime trip to Edinburgh, and I was one very unhappy camper!