MacDonald's literally purchased Tim Horton's old supplier, all you folks saying you prefer McD's are actually drinking what was Tim Horton's coffee about 10 years ago. They bought the entire thing, the supply chain and all.
Source: MacDonald's Europe VP of Sales and Marketing is friends with my wife
PS they are still VERY FRUSTRATED THAT EVEN THOUGH THEY OWN THE ENTIRE OLD TIM HORTON'S SUPPLY CHAIN PEOPLE STILL GO THERE funny as heck