Have driven the GC V8 and absolutely love it , great power , smooth and very quite , took a Toyota Prado diesel for a test drive today and was not impressed, lots of lag. very noisy, and the seats were hard and suspension was not as smooth as the Grand ,just didn't do it for me .
From a fuel cost point, the V8 will end up costing me around $ 2000 extra in fuel based on 25k per year. for me its worth the pleasure to have the grunt.
Driving the V8, smiling all the way.