Ive used Gardner, D&R, and Rick's. None stainless.
Gardner, no brainer there. Perfect fit and the way to go if you're concerned with a judging sheet.
I installed one from D&R about a week before my friend installed one from Rick's. I was pretty pleased. Wasn't perfect, but better than I was expecting based on experience from some in the past. He had all kinds of problems that I did not have.
He put the one from Rick's in the trash can, bought a D&R and said it was night and day difference. Again, not perfect but pretty good considering the price. This was about a year and a half ago, so I can't say much about what is currently available if it's changed.
A guy on TC a several months afterwards experienced the same thing, D&R fit better after having tried the one offered through Ricks.