I don't buy the expensive ones because as long as I can make out what is in the picture, thats all I really care about.
If I did have the money to spend on the high dollar ones I probably would do it though. I have never had a camera stolen becuase I don't put them where people go. I have been doing this since 2004, and have only had a pic of one human. That was on my first cam that I just put out by the river for a couple days when I was figuring out how it worked.
For me Quantity is better than quality.