Best one ive found is the moultrie M80 BLX (black flash) .... Can be found online for about $150..... The black flash works great. Picture clarity is great, and the all black lenses make it much easier to hide than the standard glowing IR screen.
The M80 has been replaced this year to a 10 MP camera instead of 8mp ... I think its a M990 now.
I have 6 of the M80 black flash ones. I use 8gb or 16gb cards and I leave them out for 2 months between checking them. 3k+ pictures and batteries still having life left in them are the norm in warmer weather. I always change batteries when they get below 50% in winter, and 40% in warmer weather.
I have only had one that gave me problems when new and Moultrie swapped it for a new one.