which exhumer would be better to use with tm+?

[cstrong13]

I finally finished training up to exhumers and am wondering which exhumer to use, up until the recent update i had planned to use a hulk but now i am stuck between the mackinaw and the hulk.. does anyone have any input on which would bring in more ore per tm+ session?

[VanGoghGaming]

The huge Ore Hold of the Mackinaw wins the race by a mile however it will also make a juicy target for the suicide gankers so overall I'd say to go for the cheap Retriever.