I recommend WildGame Innovations. I have used them since 2009. The first cam that I got was the IR4 09 model. It works great. When they revamped it to the 2010 model it got even better. I had a problem with the shutter, I think a small ant or something got inside and got wedged in, and I called their customer support. I sent it in and they gave me an IR5. I then got an X6C and that is probably my favorite cam in the field so far. Works fantastic. Great night and day pictures. I just got in the mail the new Pulse Wifi models. I tried it around the house and works amazing. I love how I can pull it up on my phone and show people.
I totally recommend WGI for their customer service and they are continually getting better with their cams.
Here is the link to the Pulse camera I have.
http://www.wildgameinnovations.com/products/ir10x.html