Commonly, DL is 70/30 (most common) or 60/40 and MTL is 60/40 or 50/50 (most common).
That being said, there are people who DL with 50/50 and even (slightest minority) who MTL with 70/30.
End of the day two factors are to be kept in mind.
1 - The tank you're using along with the wattage. If I...
If you were to leave 24 car lengths between you and the car in front of you in South Africa, you may as well brake and stand still as that space will be filled quicker than a ANC convention offering free food...