We bought the Chef King 10 Gauge Steel Griddle, 12 Inch x 20 Inch, from amazon (link above).
After around 4 months of use, I am ready to opine on the "Chef King 10 Gauge Steel Griddle".
The bottom line is that it is OK. I have an idea for a griddle design which I would love. I'll write about that on a separate post.
We have an electric range with a middle "bridge burner", so we thought this would be a good fit. Unfortunately, the steel griddle does not diffuse the heat evenly and you're stuck with a very hot middle griddle.
The 1.5 hour seasoning process:
Here was a nicely (oven) seasoned griddle:
After use, you can see the extensive and uneven carbonization in this picture:
It seems to work alright.. cooking some breakfast dinner on it:
It might heat more evenly on a gas range with large burners.
Recommended: Maybe, but not for electric ranges.