tim hortons' donuts are the worst. you can get half-dozen for $1 in supermarkets, they are better than tims. i hate tims with a passion but can't help it, i am there 2-3times/week for their iced cap.. :D
don't eat donuts other than a honey cruller once in a blue moon. They may not be that great but I've heard they're better than DD. I think the specialty is the blends of coffee, anything else is secondary.