Theres some good options here but they are not cheap
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Im using a Moultrie M80 BLX which is cheaper but I havnt checked the flash to see if its visable at all, night shots are ok.Iv also got a ltl acorn 6210mm for the mms feature but the night flash is poor and it lets in moisture . They are in the process or redesinging the case but untill they fix the problem its a no go.
This is the Ltl Acorn at night.
Daytime shots are very good from both cameras. Things to considder are trigger time and sensitivity, megapixels are pretty much irrelevant once you get past 3.