First the math, then the break down of how they performed.
(TLDR: Great Value, I wouldn't prefer them for long range shooting, I like them for 50 yards and in)
Full-sized IDPA paper targets typically cost me about $2/piece
I typically replace my IDPA paper targets after about 50 rounds to freshen them up.
Infinite defense claims a 3,000-5,000 round lifespan on their targets, and after my shooting, I think that's fair.
at $2 per 50 rounds worth of paper targets it costs me about $120 in paper targets to shoot 3,000 rounds and there is no splatter effect. (this is estimating the low side of the target's life)
I bought the whole bundle of three for around $200. Now, sure there's spray paint I have to buy added in there too, but to get solid targets that don't blow around in the wind, give me visual feedback with the splatter effect, are safe to practice at 10 yards and in, and reset with spray paint....all for less money than I would spend in paper targets, I'm happy.
The entrance holes are tiny, barely visible, the exits are slightly larger, but I really see these lasting the 3,000+ lifespan that they claim. I shot .22lr, .223/5.56, .308, and 9mm at them.
So, why four stars?
I realized after buying them that they serve next to no purpose past about 50 yards; and even then, it's iffy. I shot them at 50 yards, and you can see the "splatter" impact at that distance if you have a fresh target and good eyes. With a scope, no problem, of course.
But there is no audible confirmation. So, I found that at 100+ yards, I actually prefer steel. At that distance, I prefer the ring of the steel as impact confirmation, and steel has no temporary life span (assuming you dont shoot 50 BMG at your 3/8s AR500 like a moron).
So, in conclusion. These are great, I train with them now 50 yards and in. They came with clamps which was super nice (6 clamps, 2 for each target). And they are great value. I recommend.