I finally made it to Lori Ann's in Charlestown for their famous donuts last Sat. It sounded like they always ran out early so I was afraid I'd be out of luck at 12:30 but there were still a few, so I got a plain to best taste test. Very good, still had some crispness and that good donut greasiness. Better than Mike's, still need to test against Kane's and Verna's on Mass Ave.
Went back to Louie's in Somerville (McGrath O'Brien and Broadway) for a grapenut custard cone. This is definitely the best value in Boston. $1.95 for a good sized but not obscene small cone, many interesting flavors, good quality. The stand is open til late Oct., give it a try.