It works.
The only thing I didn't like about it is the fact that it is an unfamiliar obstruction that is difficult to get used to.
The pros about the rack:
It does what it claims and racks the balls frozen every time. The only thing I noticed, was that on the 10 ball rack, the 1 ball had a hard time sticking to the pack. Maybe it's because of the indention the spot has. I tried it on a different table and it was the same thing, so maybe it was the rack. The nine ball rack didn't do that. Considering all the fussing around you do with a triangle rack at times, this rack is a breeze.
The cons:
What I didn't like was on mishit breaks, there were balls left on top of the rack. What do you do there? Just play the balls out? That is the only major downfall of this rack. The rack interferes with the natural play of the game in that respect. Also, what if you have to spot a ball or two after the break, and the rack is unmovable? I rolled some balls across the rack and it does alter the path of the balls, but ever so slightly. It's not like anyone could ever play a shot with any high percentage. I also think the balls being stuck together like that, there is some resistance during the break. I noticed it compared to racking normally. I'm sure, scientifically, there is an increased level of resistance initially during the break. After the balls separate from the pack, it is back to normal.
All in all, this rack is an unexpected phenomena that no one expected. I think no one came up with this before, because of the taboo principle of adding something to the table. That is still something that I have to get used to. I did watch the tournament in the Philippines and how they used this rack. If it is good enough for them, it is good enough for me.
All the guys at the pool hall were actually speechless. They really had nothing to say. The looked at it, and said, "Hmmm, wow." and that's about it. There are a lot of skeptics there too. I think, because of our mental barrier, this rack will take time introducing itself into the mainstream.
Overall, I give this new, innovative product three and a half stars.... and for only five bucks, how can you go wrong? The Delta-13 is over $100 and may not rack perfectly every time.