Anybody run PRW Steel Shaft Rocker Arm System?

These seem to be the best "deal" on roller rockers I can find, short of cheaping out on Ebay crap or the 440 Source ones. They seem very similar to the COMP ones but at almost 1/2 the price.

PRW Steel Shaft Rocker Arm System

Motor should be north of 500 HP and the cam is https://www.summitracing.com/parts/cca-cl23-233-4, Heads are Stealth and COMP double springs w/10* locks.