Well with four different series and multiple options within each series it is hard not to love it anyway. Especially since it is the best of mesh and the best of RLV since they are Opencollar scripted as well.
Next is the Wilds series with 5 glossy animal prints.
Each collar comes with 5 sizes plus one deformer option. No alpha but there is sure to be a size that fits but still try on the demo before you grab your copy to make sure there is in fact a fit for you.