i couldnt believe it took so long for someone to mention prosciutto....i dont get it often because its pricey, but its def my favorite....actually, the good deli by me has many different types ranging from $9/lb up to $30lb
as for my everyday sandwiches, i usually go for honey turkey, honey ham, or buffalo spiced chicken....if im splurging (healthy wise), hard salami, pastrami (even turkey pastrami) or corned beef....sometimes the places near me have really good homemade turkey - a bit dryer, but very tasty
as for brands, Boars Head whenever possible please....the majority of their products really are better than everything else