Two different rifles. Ive had two PredatOBRs and currently have a DD5V3. For punching groups, the LaRue was amazing, but I quickly found its flaw when using hotter rounds, and it would just shit itself every 3-4 rounds. Larue tried sending me new mags, said put it back into the factory short buffer config (I had a PRS stock with rifle buffer), but then it just became worthless and wouldnt get more than 2 rounds at a time before a double feed, and no way to slow the carrier speed down. Ended up selling it as many of my other 308 guns with adjustable gas/piston worked a lot better with the hot rounds and suppressors, and gave up the 1/2-3/4 MOA for a consistent 1 MOA and reliability.
Accuracy wise, ive yet to shoot a more accurate semi auto than the LaRue, but it couldnt do what I wanted it to do, and while the best groups were printed with 175 SMKs at 2550 FPS in the 18 inch barrel (it would literally print 1/2 inch 5 shot groups one after another at 100 yards), I would get too frustrated with it destroying my Lapua brass and not being able to get through a mag reliably. Cant fault the gun, I just like my 308 bullets to fly at 2550-2600 because my furthest target was 1100 yards, and at that velocity, it would literally never miss as long as I did my part. I wanted a 20 inch barrel, but as others have stated, the sheer cost of their barrels makes it tough to swallow.
If youre going to run factory FGMM or similar, im sure it will be fine, but its a big chunk of change unless youre going to push it out to some extreme distances where it will really shine, or youre obsessed with tiny groups on paper. Majority of shooters wouldnt know the difference between a sub MOA gun and a 1-1.5 MOA battle rifle unless they have the glass and expensive ammo, as well as shooting techniques, to support it.