If these four will be reference implementations recommended for other developers to use, I think it would make sense for someone to spend the effort to benchmark and test on various browsers. All four implementations appear to be done in different ways, which means different performance and also potentially different compatibility.

Would be bad PR if any of the reference code has significant compatibility issues. Maybe someone can offer a small bounty for this? I am about to go on the road again, so I won't be able to test this, but I am sure there are people eager to earn a bit of NXT.

I don't even know how one would test this, so maybe someone that does could post testing instructions?

James