Eh, I've heard better, I remember there was this one fella that had the perfect Shadow voice. I don't quite remember what became of him.
As far as official voice actors go; I prefer his original voice actor David Humphrey, he brought some charator to Shadow which hasn't been recaptured in his recent incarnations. His other two voice actors make him sound like a generic, bland and brooding anti-hero IMHO. But this isn't entirely the actors fault, you can only go so far with the material given to you.