I am planning a 5 day visit to Cambodia in late January. We will be flying into Phnom Pen and out of Siem Reap. What would be the best way to commute between the two places? Six hours on the road seems such a waste of time. Is it a nice drive? Would it be worth to hire a private vehicle and drive over? There are 3 of us. Are the flight connection between the two cities dependable - it seems to be quite costly. Would be great to have a feed back.