In Trail Cams you do what you pay for. If you don't have the money to spend on a good cam I guess any Cam is better than none.
I have owned Cuddeback, Bushnell, & Moutries, but once I started using Homebrews built by a friend I sold All my other cams. They are not cheap by the time you buy everything to build one with, but trigger speed and quality pics are as good as it gets. He builds most of the cams for me using Sony P41 cameras.
Lithium batteries are definitely the way to go. When I was running 2 cams in Nebraska earlier this month, the cams were filling the 512mb cards up with over 260 pics in temps well below zero. Battery life was still good even after that many pics and many using the flash. They only take 2 AA batteries as well.
Dan