RE: the block or black hole?
I have had a block for the past three years and it works great - I have left it outside and haven't experienced any issues with it. But the center is wore out with pass-thrus with both broadheads and field tips. I shoot broadheads into it outside prior to walking to my stand so I have to shoot the outside targets. I plan on practice shooting in my basement this winter at 15 yds so maybe I should try the Cube. I will only be shooting field tips in the basement.