Honetly, I haven't found a good one. I use bag targets as much as I can. I have arrow puller pliers for the block targets that I use to test broadheads. All the blocks that I have tested like to grab the arrows and not let them pull out.
If you must use a block, get a 6 inch section of PVC pipe and two end caps. Glue one end cap on and stuff the pipe with sponges, glue on the other end cap. Drill a hole the size of your arrow in one end, pour tire black into the hole. Before you shoot, push your arrow into the hole to coat your arrow with the tire black.It makes removal much easier.
I was getting complete pass throughs on my compound layered target so I bought a Morrell broadhead target right before the season and only shot it twice. It took all that I had to get that bolt out of it and it loosened the insert. I was able to take a deer with the same broadhead and bolt, but in the back of my mind I was wondering if I did any damage to either when yanking on it so it would come out of the target. You definitely don't have to worry about a pass through like I was getting on my other layered targets.
I have a Spyderweb block and it is amazing. Two finger removal with an arrow going 370fps. But it is ONLY designed for field tips. For broadheads I use a homemade bag stuffed with old heavy clothes, or my friend's morrell cube.