If you regularly maintain/overly maintain your G, then Motul

My maintenance schedule is as follows:

Oil every 3k
Diff every 6k
Trans every 15k
Brakes every 15k
Valve Adjustment every 30k
All other fluids every 30k (coolant, etc)
Pads/Rotors/Tires as needed

I seem to average around 30k-40k miles per year, and yes, I do go way above and beyond in maintaining my cars, but I do drive them hard I consider it cheap maintenance.