My first trail cam was a Stealth, I had the same complaints, it finally got where it wouldn't trigger unless something was a foot or so from it and I bought a Browning. Daylight and dark compared to the Stealth, fast trigger up to about 30 yards or more and great picture quality.
I am too old school to use it where I hunt but I enjoy keeping track of the mostly nocturnal critters in my yard and in the woods around my house. My front yard may have 6 or more deer in eating acorns and my shrubs after dark. Without the cam I never would have known about their nocturnal maruding.