SideStep Best for Cheap Flights

Have you checked out SideStep? I don't travel often, but in the last ten years this is the best site I have found for finding the best price and times for flights. It also offers searches for car rentals, hotels etc. The reason I find this group search site more valuable than others, is because it shows you a chart of the flight prices over the last 90 days -and- it shows you the best prices that other people have found in the last 48 hours on a calendar or list view. So happy traveling!