Door handles and center consoles are prone to scratching and peeling in all years.
The consensus among enthusiasts and experts is that the models are the best to buy. These "HR" models are highly sought after because they feature the upgraded VQ35HR engine , which provides more power (306 hp) and a higher redline while resolving the oil consumption issues found in earlier versions. Best Years to Buy
“Early model 03 and 04 models have a camber issue... every time you get an oil change you end up having to change the rear tires too.” Facebook · 350z · 3 years ago Key Buying Checklist
These are high-failure items that can cause the car to stall or not start.
For manuals, the CD009 (standard in 07-08) is the most robust; earlier years may have synchro issues in 2nd or 3rd gear. Best years for 350z and 370z models? - Facebook
Drivers often debate the merits of different engine generations based on their tuning goals.