2nd Ave Deli is OK...However, the best pastrami,corned beef, pickles and exceptional cole slaw will be found at Bens 209 West 38th Street near 8th Ave. Trust me their portions of meat are smaller than all the non kosher delis Katzs included. But none compare in quality to Bens except maybe 2nd Ave Deli.
BTW Pastrami King on Queens Blvd is long gone, however there is a Pastrami Queen in the upper east side of Manhattan which is Ok