I'm totally a fan!
Located in an unassuming corner convenience shop at N 51st Avenue and Thomas Road, Rainbow Donuts is definitely a "hole" in the wall (N.B. they sell doughnut holes too!). Counter staff were really pleasant and my box of doughnuts - a couple of apple fritters, a couple of glazed, and a couple of crullers - were delicious. The cruller I had was fresh and sweet and yeasty and full of unneeded, but yummy, carbohydrates. Don't be perturbed by the shop's exterior....the interior is full of delectable doughnuts, all served with a smile.