BookIt.com (tel. 888/782-9722; www.bookit.com); came out on top with an average saving for a couple of $121 per night over separate direct bookings. The average doesn't tell the whole story, though. For spring trips booked less than a month in advance, the average saving was a whopping $244 per night; in effect, the hotel room was usually free. On the other hand, deals for low-season stays booked 6 months ahead averaged out to about the same cost as separate direct bookings with the airlines and hotels. The website is quick and easy to use, and ample property details on the search page reduce the clicking around required to decide which to select for further investigation. This site offers the widest range of choices for all-inclusive resorts, which dominate the listings.