Damn, you're going to scare this guy away. All valid points though. 09 here, I purchased it when it came out and so far I've had no issues. The car does consume oil but its really not a big deal. But it could be worse if you live in really hot climate. Just keep an extra quart of oil handy and learn its consumption habits.
Just an FYI, don't rely on Carfax to tell the whole story about a used car. I sold my 350Z base to Carmax and it was in 2 accidents, but only 1 of them was a major one that required a rear corner panel replaced. When they ran a Carfax, it was clean. The base Z, with no traction control, are more prone to accidents. So check all the doors, hood, and trunk jambs and make sure all the original stickers are there. The 370Z has the vin# stickers on every panel. Good luck.