Other than the Centro and Device models, Atomic offers two main choices of bindings for the consumer. Within both are 310, 412, 614, and 1018 (for racers or very aggressive skiers). The choices are Race and Xentrix. The Xentrix has a few brake widths to select from, being 74mm, 88mm, 99mm, and 107mm. The Race has only 74mm brakes. Housings for equal DIN range are the same for the Race and Xentrix brakes, with colours being the difference. The most obvious difference between the Race and Xentrix is the Xentrix has an 7mm higher stand height compared to the Race (24mm vs 17mm). There are changes in the brakes too.
The Xentrix were always the higher bindings, so even if they were Race Xentrix, they were still high. The RaceRace was the lower stand height model. Eventual name changes led to Race being only the 17mm binding and Xentrix being the 24mm binding. The Xentrix was then available in C (for Carv) and R (for Ride) models, with colour being the difference. Next year will see the Race and the CR models. The Race are unchanged, and the CR (Carv/Ride) will be Xentrix height.
Now you should be less confused.