Not having debt is great. And whatever money you are paying can go to a saving account for other projects. Having said that, what are your mechanical skills? If you can have an older car and learn all its systems and be able to repair them yourself, then that would be the best way to go. If you depend on the dealer or mechanics all the time then dont do it and keep your car. All cars have the possibility to get something wrong, even a 0 miles new one from the dealer. The problem is mostly trying to make cars more complicated, using the excuse of emissions and the like to make modern cars disposable pieces after 5 years. I would love to just have an older carbureted car and minimal electronics and I see me having a project like that in the not too far future, but that is just me. As for price and reliability, my 2003 pathfinder have basically a similar engine VQ35DE, and I bought it with 270K miles. I removed the lower oil pan and everything inside still look very nice with minimum dirt and still pulls like a new one. My 2003 G35 just bought recently with 165K and after fixing a few electrical things it is working beautifully. I paid 1450 for the G35. Nissan engines are very good.Their manuals are very well written and you can find most necessary tools online to do all the troubleshooting yourself.And beside, you have this forum support which is great and not many brands have. That's my 2 cents.