I bought a new (not the NEWEST they just came out with though as they weren't yet available) POF .308 about two and a half months ago. The 14.5" with the NP3 coatings. I'm LOVING it. I had also been evaluating the Sig 716 and the new Colt that you can switch between 5.56 and 7.62. The Sig felt about as heavy to me as the POF and was much longer as most of the .308's I saw in person. And yes, you can find posts of issues with just about any rifle you research on the internet. I found some on the Colt, the Sig and the POF though the POF's negatives were almost all about customer service and ranging from a few years ago when they had some issues with a partner/supplier.
What finally decided me was the overall length of the POF, the NP3 coating and the sub-MOA guarantee. I'm not a "gun expert" either and have just gotten into shooting over the past year or so. But on the accuracy department I can say I'm more accurate with the POF than I am with my 5.56 Tavor. I figure if I MYSELF can put a .5 inch grouping together out of three shots, then it's definitely the rifle, because as I said, I haven't been shooting for 20 years or anything like that. SUPER easy to clean too. Much easier than my AR-15's due to that coating. I'm loving it. People standing next to me at the range don't love it so much because the blast from that muzzle brake and the noise definitely make it's presence felt. People are always coming to check it out once I start shooting. But the recoil is nice and as I said, seems like a great gun. Got it for a pretty good deal too, not the usual close to $3k that you see in a lot of places.
That being said, I think you'd be just fine with one of the others too. They're all good guns. I'd recommend you see them in person if at all possible and just see which one feels best to you when you pick it up. I don't think you'll be making a mistake whichever way you go. I can only speak to the POF being what seems to be a very nice, good and reliable gun. Oh one more thing. I've tried a BUNCH of different ammos and weights of bullets and have not yet had even ONE issue. It shoots EVERYTHING so far. Just added a nice Nikon BDC scope to it and I'm very happy.