anyone running ross piston

Really depends on the application to. I've used Kb's and have a set of Ross 30 over's now. Never had a problem with either. I've even used cheapo stockers and worked out fine. I guess it all comes down to what you are gonna do with the motor. You wouldn't really need a forged top shelf piston if you was just gonna make a non-nitrous daily driver. Just do your piston homework and buy what the engine will need.