I almost bought the PQ but originally found the KP for just slightly more than the PQ so I got it instead. I'm not too concerned about my food grate as the one I'm using is the cheaper non-hinge grate. The KP is high quality but since I've only seen the PQ in the box, I can't really compare the two on quality.
If I find a PQ for a good price, I may buy it to see what the differences are in cooking Pizza's with both.
Wayne