I've got a Canon A80, but it is listed for $399. It is a 4MP that takes photos up to 2272x1704. It takes videos up to 3 minutes with sound and plays back with sound from the camera. It has a built in mic and speaker. Flip-out LCD screen. I just got mine recently and can't put it down. It will print out a 11x14 with easy and very good quality.
As some one stated before, unless you plan on printing out larger photos, then a Canon A40 or A60 will do you fine. Both will take a photo up to 1600x1200.
A40 photo gallery
http://www.steves-digicams.com/2002_...0_samples.html
A60 photo gallery
http://www.steves-digicams.com/2003_...0_samples.html
A80 photo gallery
http://www.steves-digicams.com/2003_...0_samples.html
My A80 is a great camera, but it is too expensive for me to put in one of my planes. My A80 has a flip out LCD screen and other features that you may not need on your plane. The A40 and A60 both have great photos and I found the A40 for around $130 and found the A60 around $150. My A80 is listed here for $399. You can put the A80 in your plane, but again unless you plane on printing a 11x14 photo then you might not need a A80.
The A80 would be a great camera if you are going to use it outside the plane, then the A80 would be good. Just too much dinero for me to put in a plane.
Good luck and let us see the photos when you get the camera installed.
DTB