Trying to figure out if a guide book is needed for the 4 days I will be in Brussels in late December. There is a good deal of information online but a guide book is generally a safe bet for the sake of convenience. Have not used a guide book in a while and am not currently loyal to any specific brand....Anyone have an opinion on which books are best? Not a fan of Fodors or Frommers. Leaning towards Knopf City Guide or Eyewitness Guide to Brussels & Bruges, Antwerp & Ghent.Any comments would be appreciated....Thanks!!