I think I remember seeing a pic of the underside of one of the "speedmaster" versions. It had PRW embossed on it, just like on mine I got from PRW. I bet the PWR do too. Now maybe the castings are all the same and the screws and rollers are done by each house. That could make a difference. But I'd bet dollars to donuts they are all the same. Mine seem pretty good and have been given good reviews by a couple people whose opinion I trust. But everyone needs to do what feels right to them.
