It's no secret that gripes about air travel are very common. But what if you could know fares and the quality of a flight before you booked?

That's the premise of a new website called InsideTrip.com. You can shop fares and learn about the load factor on flights, leg room, the age of the fleet, the rate of baggage loss and much more.

InsideTrip.com offers Consumer Reports-type rankings with a system of little circles and a numerical ranking. The consistent No. 1 airline seems to be Milwaukee-based Midwest Airlines. On the flip side, United Airlines is usually the worst. Little surprise there!