The Piper Twin Comanche can fly at 160 kts on 50 litres per hour and carry 4 or even 6 people if you fly on reduced fuel load.
Bear in mind that they also have the capability to fly for 5.5 hrs without tip tanks and 7.5 hours with tip tanks so reducing the fuel load still gives you more endurance than the average single.
I have owned a Cessna 182 and it burned 55 litres at 130 kts, the Twin com burns less fuel at this speed so MPG is better overall at any speed you care to choose.
Short field grass capability (I use 600 metres regularly ), a stable instrument platform, good spares back up... what else have the Romans ever done for us ? The list goes on.
If you don't believe me read the article in "Flyer" Oct 2006. The author of which has now gone out and bought one himself.
Some flight test info here that may help:
http://www.fergworld.com/articles/ar...n_comanche.php
http://www.planecheck.com/twincom.htm
PM me if you want more info.