I bought one at the Reno bar box championships.
After using it ,if I could of returned it I would of.
I don't have a problem getting a tight rack using a good wooden or aluminum rack.
And I prefer racking the balls with a rack instead of some flimsy piece of plastic.
I don't believe the magic racks rack the balls any tighter then I can do with a regular rack.
You get a different type of rack with templates than you would with a regular rack.
With a regular rack the balls are sitting next to each other. They may be touching but still just sitting there. With a template rack, the balls are trying to lean into the middle a bit, pushing against each other. That is what makes them "explode" during a break more, more energy stored and tighter contact between them.
It's like a group of people on a bus, if you stand upright with no lean, you can pack next to the others, but say the doors open, no-one will fall out. Now take the bus and pack it so that you have people leaning on each other and pushing them to the side a bit. Open the doors to release the energy inside the bus, and you will have people bouncing out of the doors due to the pressure release shoving them outward.