We run 8 D40 moultree's, Yes there on the bottom end on price but we have great success. Great battery life and easy set up, The trigger speed about 2 or 3 seconds not bad.
I would like to try the better cams but we have several places and just trying to get all of them covered for the best price.
Some of my pics are on the 2008 trail cam thread if you want to see some but they are posted by Guru and Steadman. Check out the thread anyway and you can see some of the different camera's.
Good luck
Tracy