which Safari hyperloop wagon to buy with limited drinks

pixel_player61368721

Lets say I've got 50000 drinks from the current Valentina contract.
There are different cargo values for different costs of each material cargo.
What would be the most advantageous spend be in the long run?
e.g. buy as many 775% cargo trains for 16440, or spread more 625%, or even more 320% cargo trains??

I'd be interested to get other peoples view on this, so please reply if you've got the time.
Thanks

66Fabio

pixel_player61368721
HI, I bought the loco and all the 320% wagons available 'cause I need essentially that four materials; by now, with the drinks I'll collect, I think to buy as many 625% as I can, I'll decide of what...