PRW,Don't do it!!!!

PRW is the bottom of the barrel......O.K. , except for the Egay vendors with their PRW seconds.
There are a couple steps up before you get to the full roller Harland Sharps.
Comp is a nice choice , Hughes rocker and shaft packages are good for what they are. The bushed Harland Sharps would be a nice choice.
The rockers , as you know , are only part of the deal. Good shafts and hold downs also play a part.

what do you mean by this exactly? good for what they are?

imo, they are just as good as comps, and harland sharps.