All BoSa's look pretty identical. An older interior (whoever owns these seems to buy older places and keep them that way) and Asian employees just like almost every other BoSa I've been to.
Matthew D. is spot on with his remark in that they seem to be out of many things at the same time. How you run out of stuff for doughnuts when it's your only product is beyond me. They sure are tasty though, especially the ones with the pink dough (such as the strawberry, my personal favorite.)
Now, if you're looking for a "fancy" doughnut or something out of the ordinary, BoSa may not be the place. No Maple and Bacon flavored doughnut here. They serve soft drinks as well, which I didn't have.