production

I'm thinking of buying a GX and wanted to get thoughts on what production years the forum thinks Toyota delivered the best mix of reliability and performance in the GX460? I know this is a subjective question, but it always seems that some years get close to perfection and others are impacted...

Note: This is applicable to 80-series rigs as well, depending on the market. Since Toyota has been making this motor since, well - basically **forever** (in vehicle years), I was wondering if there are certain years or production runs in certain factories which are notoriously good or bad...

Have you heard about JIANGSU JUNCHENG? What is your opinion? Did anyone buy it? I find their production very interesting.