I've had both a Core PRS acoustic from about 2012 and a PS PRS acoustic, as well as two Collings, Two high end Martins, and a few Taylors, Larrivees, etc.
I like the PRS a lot better, and sold my Collings. I stopped buying Martins around 2000 or so. Not a fan of Taylors, though I thought they were cool for a short time, they didn't record as well in my hands.
The PRS are made a little heavier - as are the Collings, by the way - and that's for a reason. The theory behind the PRS acoustics is that the sides and backs are built a bit heavier so that the vibration is concentrated on the top, which is essentially an acoustic guitar's "soundboard" in piano terms.
This is what gives the PRS acoustics more projection and volume than most guitars. When my son, (who's recorded several gold records) heard my PS, he was floored, and said, "It sounds like a freaking grand piano!" He also kids me that the only guitars I own that he wants to inherit are my PS acoustic and my Hammer Of The Gods McCarty Singlecut.
However, the PRS acoustics are also capable of great subtlety. If you listen to Tony McManus' Mysterious Boundaries, you'll hear exactly what the Core/PS models are capable of, because it is beautifully recorded and sounds just like the guitar in the room.
Both my Core and PS PRS acoustics work better for me than anything else I've ever played, including some of the big names in handmade acoustic guitars.
My feeling is that any "cannon" like a PRS is excellent for Bluegrass.
I haven't had any time on an SE acoustic, however, so I can't give an opinion on those models.