Swamp Ghost is a great cam, the guy builds them using homebrew technology, you will not be disappointed in one of them. I have several that are built basically the same wayand with the same components as his, they work well and I can guarantee you his customer service won't leave you hangin'.

I have also heard the Recon is a good IR cam for the money ($300).

Chasin' Game used to have a good independant survey of the production model game camsout there, I would definitely look at what they have to say before I bought one.