I have always been a strong advocate for Chope (and I still am!) - it costs absolutely nothing for you to use, the UI is beautiful and the extensive range of restaurants have helped to make difficult decisions over the years. Obviously getting Chope-Dollars (which convert into both vouchers and KrisFlyer miles) with every fulfilled reservation makes a huge difference as well. Quandoo is a competitor and honestly, it looks nothing like Chope - the reservation flow is terrible and navigating the site is a pain. However, the partnership with ShopBack unlocks an opportunity to earn S$4 cashback with each fulfilled reservation.