Love all of them. Have watched them for years. Also don't forget Inspector George Gently and Wallander. And a couple of cozies are Hetty Wainthroppe Investigates and Rosemary and Thyme. Some really old ones are The Inspector Lynley Mysteries (2001 TV series) and Wire in the Blood (2002 TV series). And if you like Italy mysteries, try Zen (2011 TV series).