Yes there are more options now. Leatt was the first and has a certain design philosophy, that being the brace is rigid and TRANSFERS all the energy to the clavicle area. While it has saved riders I'm sure, the sacrificial clavicle is unacceptablre to me, having had three surgeries and a lot of down time. And if you have plate already its horrible, unless your fat there is not much meat there (I can feel and count the screw heads in mine).
The EVS design philosophy, from examining the brace, is one of progressive ABSORBTION of energy to a certain point and then TRANSFER of the rest but over a much wider area of the shoulder. To the untrained individual, this brace appears like "cheap plastic" and inferior to the Leatt. To me as an engineer, it makes a lot more sense. I have not looked at the other options but would choose one with this design in mind. I would like to get one for my younger son soon.
As far as which is more effictive, time will tell, but the Leatt being the first has more data available. Its a personal choice, and many just feel more comfortable using what is more established.
Look at them all, try them on, and remember its all about energy transfer/absorbtion, it has to go somewhere.