Try a McKenzie Carbon Block. I have been much happier with it over the Black Hole or the Block. I have used it for two years now with good results.

I do not believe any of your laminated targets will last with broadhead use, even the Carbon Block. I only shoot broadheads into a target I expect to destroy in short order. If anybody knows of a target that will withstand a couple hundred broadheads, I'd like to know about it.