The 40D is my camera of choice--It fits my sweet spot for AF speed and resolution.
Camera #1--first production run--Error99 upon powerup--never shot a single frame.
#2--went about 110k before it was sold on Craigslist.
#3--wifes camera--started throwing Error06 @ about 75k--shut off automatic sensor cleaning and all is well and just over 100k now. I believe this is self inflicted as she turns it on and off multiple times in a session where mine gets turned on once.
# 4--My current camera has about 85k--never a problem.
#5--Picked up a replacement locally with less than 900 actuations.
I've never felt the need to MA--all the lenses in my collection are good across the wide variety of bodies we own--and in my little word I usually shoot medium JPEG so resolution is not a problem.
Best of luck with your decision. 


