76th and Mill. I have been sending people there for their home made pastrami, glad to see he is doing his own corned beef as well.
I haven't tried a direct taste test against House of Corned Beef yet, but house is a far larger and more expensive sandwich. Be warned though, the Spartan Pastrami is huge and is enough for two meals.
Don't forget to visit he Hmong mall across from Spartan when you go.