I personally can't stand Krispy Kreme donuts since I feel like I'm paying for air and a glaze that leaves a nasty film in my mouth.
There used to be a chain called Mr. Donut that had the absolute best donuts ever, but I think they were bought out by Dunkin Donuts a while back. For chains, Dunkin is probably my favorite since their donuts are actually substantial compared to most other places. Nothing beats a good cake or sour cream donut from there. Also, the choice between cinnamon powdered and cinnamon sugar coated is absolute <3.
There's also a local donut place near me called Yum Yum's and one donut of theirs is enough to fill you up. They're ultra heavy and come with about a quarter inch of icing. I love them, but I hardly ever pass by their stores when I'm hankering for a donut, so I haven't been there in ages.
Jam it back in, in the dark.