Just picked up an '06 G35x w/Nav a few weeks ago... it's awesome and everytime you turn it on it pumps you up with the rev of the engine!
As far as pre-purchase advice.... be careful with the "Certified Pre-Owned" program as far as how it's represented to you by the dealer... I literally got 3 differant stories from the seperate dealerships (all true Infiniti showrooms, no 3rd party vendors) .... I chalk some of it up to the salesperson just not understanding their own program and others just being shiesters....
So here it is:
- Original Warranty on an 2006 model = 4yrs/60k b2b
- "Certified" pre-owned warranty = 6yrs/100k (from in-service date) comprehensive but NOT b2b warranty... there is a $50 deductible for parts.... obviously whatever you have left under the the new car warranty would apply up to the 4th year or 60thK mile:
http://www.infinitiusa.com/pre-owned/warranty.html#
- Here is the SHAM.... there is an "Elite" warranty program which you can purchase at an additional cost (only on "certified cars and usually for $1,000-$1,500) which gives you a full complete "NEW CAR" warranty for the 6yrs/100k from in service date with $0 deductible for parts... like said, it's a "new car" warranty.... BUT what certain dealers do is include the "Elite" plan in the price of the car and charge you MUCH more than the cost of purchasing it seperatly (at your own choosing) ... So that's why there can be drastic differances in prices of the same "Certified Pre-Owned" car......