You won't find them "dead on". The guys that are hand pouring them, the pours are slightly thicker than a senko. The guys that are injecting them, they don't have the same salt content and/or softness to them.
If you want "dead on", well....you are going to have to stick to the original.
That being said, I have seen several hand pours that can put a senko to shame. I've also seen some bad knockoffs, too.
Good luck on your search. Please let us know if you find what you are looking for.