That's a really cool gun. I haven't heard of it until now. You have to give them credit for that butt-stock, pretty amazing, even an accessory rail on the bottom for a mono-pod(makers of butt-stocks always leave that out). I like the externally adjustable trigger as well, I wish it could go a little lighter, but 2#'s is probably riding the edge of a lawsuit. Easy as an AR for a barrel swap, geez, I would have to buy another barrel just because. Really nice rifle, hate the long flat-top rail though, would rather just have a carbon-fiber tube with few inches of rail where needed, but theirs' is probably more stable. Detachable magazines on a bolt? kind of a turn off for me, but why not, it doesn't look like they gave up any integrity to achieve that feature. I am sure it will be a big seller for Ruger and further concrete them into the being best guns of current make. I think they only wrong turn they made on the RPR is the flat-top forend, just looks lik they are trying to be "tacti-cool" rather than selling a serious long-range rifle, although it seems like it is exactly that. That's just my opinion, I am sure half of us love the AR-ish look and the other half dislike it, I think overall it looks like a bad-@#$ gun that I can't afford.
I myself would be better suited to the Predator. I spend at least ten minutes a day thinking if I should go grab one or not. I have read a half dozen reviews showing that out of the box it can 2x2 plates at 1000 yards over and over. That's just too good to be true on a sub 500$ rifle, I would be more than happy with that. If I bought the predator, I would have to spend about 4-500 for a scope and I would want a different stock. But if that has me shooting at 1000 yards for under 1000$ then great, if it's true. i'll leave the precision rifle for actual precision shooters.