When it comes to deli sandwiches, there's a quantum gap between good and great. If you start at the bottom (days-old vending machine sanwiches in the triangular packages) you can travel to the lower middle (Subway), on through the upper-middle (Quiznos), and still be miles away from a truly excellent sandwich.
While it doesn't quite cross over into the (appropriately rare) 5-star territory, I'm happy to report that Brooklyn Grinder puts a comfortable distance between itself and the best of the offerings introduced above. Quality ingredients, a great range of hot and cold combinations on the menu, handcrafted care and suprisingly warm personal service add up to a top-notch experience. Like Josh H., my personal pick is the Turkey, Bacon & Swiss, but the Rueben, Rachel, and Roast Beef and Cheddar Melt offer tough competition, and that's just in the hot category.
If you live or work near the Ave and value a quality sandwich, Brooklyn Grinder should be on your lunch-break shortlist. Just give 'em a try, you'll see.