We did the 1.5 hour Scrooser tour our last day in Prague, and definitly did not regret it. After traveling around the city for 5-days, we thought we saw all of the major highlights and even the local sites from wandering around aimlessly at times. I would highly recommend this company. Our tour guide, Marketa, did a wonderful job of showing us around, providing insight at each stop, and taking us around the city to some of the hotpots locals hangout, like the park that overlooks the entire city, and the hill above Prague castle. She was even thoughtful enough to provide paint for us to add to the Lennon wall, and took photos for us using a Poloraid camera. My only qualm, is we didn't opt for the 2 hour tour.