The best way to get coffee is through a DRIVE THRU! And that's the beauty of DB. You can just drive right back and get a coffee beverage.

I had an iced peppermint mocha concoction that put me back about $4. A little steep but it was huge. I think the gal said their iced drinks are only one size. 

I still think Starbucks is better but DB is a close second.