I'd be interest in knowing that as well, even though I already have the PRS and will be using it.
I had PRS stocks on all of mine and use Ergo Deluxe grips on them. Still have the grips but changed the stocks to XLR Tac AR stocks.
Ergo Deluxe for me as well on precision builds.
As a short answer, we all feel that we get a much more solid, secure and repeatable cheek weld. We had a PRS class for semi-autos and had 2 identical rifles, yet each with the different stock.
I prefer the adjustments, others too have their own favorite feature, if not bias. And we all like the price!
The Sierra Precision grip is hard to beat. It forces consistency.
It is a nice grip but does not allow a ambi-safety selector. Some people if I'm correct have milled out a notch on the right side to allow the use of a ambi-selctor. I havnt even looked if they make a new version that allows it but that a issue for some.
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