Was recommended the dirty dozen from a colleague. Only tried a few to date, both rubs and marinades have been excellent.
Haven't used them yet but supplier had a good reputation so im sure they'll be good.
The performance increase for your ceramic grill
With the cast grate you get an optimal heat distribution, this acts like a heat accumulator and brings great branding to your food.
For example, you can set up two different temperature zones, the cast iron grate on one side and a grill plate on the other.