The right baby monitor depends entirely on which parent-anxiety vector you're trying to manage. Here's the decision framework.
If you're anxious about whether the baby is breathing
Get the Owlet Dream Sock ($329). It's the only consumer monitor that addresses this specific anxiety with hospital-grade vital-sign tracking. Pair with any video monitor of your choice if you also want video reassurance. For NICU-graduate babies, premature infants, or families with previous SIDS events, this is the rational choice. For typical first-time parents wanting baseline anxiety relief, also a defensible pick — but be honest with yourself that the AAP doesn't recommend it as SIDS prevention, and don't let it replace safe-sleep practices.
If you're planning sleep training and want data
Get the Nanit Pro ($279). The computer-vision sleep tracking is the only system that gives you accurate sleep-stage and sleep-quality data without putting anything on the baby. The published sleep training research shows that accurate baseline data is what makes sleep training work — subjective parent reporting is unreliable, and the Nanit's objective measurement closes that loop. Plus the overhead crib-mount angle is the best baby-viewing angle.
If you're tech-aware and don't want a WiFi camera in your baby's room
Get the Infant Optics DXR-8 PRO ($229). It cannot be hacked from the internet because it isn't on the internet. The closed-loop FHSS wireless protocol gives you parent-bedside monitoring with zero internet exposure. The interchangeable lens system makes it more flexible than fixed-lens competitors. This is what most software engineers buy for their own babies.
If you travel for work and need remote check-in
Get the VTech RM7764HD ($199). The dual-mode operation (dedicated parent unit at home + app for remote access) is the right architecture for parents who want both local bedside monitoring AND remote check-in capability. The dedicated 7" parent unit also keeps you off your phone at night, which is healthier sleep hygiene than checking via app constantly.
If you want maximum video resolution + privacy
Get the eufy E21 ($179) for 4K. The combination of 4K video + local-only storage (no cloud subscription, no third-party data) is unique in the category. If you're building toward broader home security with eufy doorbells, cameras, etc, the ecosystem benefit is meaningful. Lower starting price than the Nanit Pro for higher-resolution video.
If budget is the constraint
Get the eufy C10 ($149). Same eufy local-storage architecture as the E21, 2K HD camera, 12+ hour parent-unit battery. The 4.5" display is smaller than the 7" VTech but adequate for typical use. The right call for families wanting eufy quality without the 4K premium.