i would love to go Mobil 1 5w50, just the price! Also that i don't have heavy mods + i don't constantly thrash my car, i think and hope that the Mobil 10w40 would be sufficient.
I called the distributor for Mobil oils, they can get any of the Mobil oils in a drum of 20L, which saves you quite a bit. 300L is the next size i think, that's a lot of oil