Alden on Madison Ave and Leffot are must stops.
There have been lots of jokes about the people working at the Alden shop (shit kickerville, baby) but they have an unmatched selection (including multiple widths). And personally they have always treated me well, maybe because they are Mets fans and I hate the Yankees so we have something in common...
I have said it before, Leffot is the finest shoe store I have ever been inside (I haven't made it to LSW yet...). Not the selection but each shoe is beautiful.
Lots of other choices - Citishoes on Park Ave can surprise you, Epaulet in Brooklyn has great clothes, Moulded Shoe (especially if you want modified last), etc.
As for the J Crew Liquor Store, you will know more about Aldens than anyone that works there (which likely won't be an issue because they would actually have to assist you for you to discover that! ).