The short version
Both are premium flexible-silicone red light face masks. Omnilux is the cheaper face-only option. CurrentBody is the consumer-market reference with integrated neck coverage.
When is Omnilux Contour Face the right pick?
If you want face-only coverage at a lower price — Omnilux is the right shape. No trial of the Contour itself has been published.
When is CurrentBody Series 2 the right pick?
If you want integrated neck flap, largest consumer customer base and feature-refined polish from multiple user-feedback iterations — CurrentBody is the right shape. The rational consumer default.