-Trigger
I have been going the cheap route and putting 2 or 3 less expensive cameras in each location.
-Primos Bullet Proof 2 (8mp) 40$
-Bushnell Bandit (14mp) 60$
I ordered them off amazon, I have three of each and haven't had any problems. They ship in 2 to 3 days.
The PRIMOS one is literally 1 switch and battery life has been fine as far as I can tell, green light is still on after 4 months. There are no adjustments, watch out for the video switch, it can take a lot if the SD card is large enough. I would suggest sticking with picture mode, but have fun with it, i did.
The Bushnell has more settings, but the default pretty much is all you need, it comes with instructions.
I don't see a huge difference b/w picture quality either. Just make sure no ferns or branches are in the way or else when the wind blows you get a whole bunch of pictures to sift through. Night pictures have been fine, in both though it really depends on how fast the critter is moving. I don't have any bear boxes or cables on any of them and I hike back far enough off roads where nobody will find them unless they follow or track me. Remember, just because the ferns, salmon berries, etc aren't high enough to bug the camera when you set it, doesn't mean they wont be in 2 to 3 weeks of growth.
I would also suggest you get a little card reader (12$) for your phone so you don't have to switch out the SD cards every time you check them. This also comes in handy because with the PRIMOS cam it instructs you how to program the time stamp onto the SD card, so by not changing the SD card each time it will keep the time stamp.
Keep in mind I am still a greenhorn to the camera game as well.
Hope this helps, post any cool pics so we can all enjoy.