@MikeB, that's a nice griddle setup you have.  What a contrast between the first and the remaining pictures.  Was the first one taken when it was brand new?
I've heard that sliders are best on a griddle.  Is that the truth?
BobJ, I do like your idea of just using a cast iron griddle which is cheaper.  It's a good way to make sure this is what you want to do before buying a larger unit like Mike's.