The diffuser plate that I ordered arrived this morning, and I am very pleased with it and the transaction. Jordan, at Stryker Welding in Ohio, personally handled the transaction and was able to catch and correct an error in the ordering process. I purchased through eBay, and eBay screwed up the order, but because of Jordan's attention to the process, everything went smoothly.
I called the company to place the order rather than just checking boxes on eBay. Jordan got back to me quickly and we discussed what I needed and he made sure that I got the right product. He sort of "held my hand" through the process, and kept me informed of progress from the initial phone call through shipping. That's service!
Apart from being very nicely finished, the piece was wrapped very well, not only protecting the product but also showing pride in its manufacture.
I ordered a large, octagonal plate, as I have a couple of Le Creuset and All-Clad pieces with very wide bottoms that extend far enough outside the diameter of my largest burner that even heating of the pots' cooking surface has been an issue.
If you want a diffuser plate, I highly recommend Stryker Welding on eBay. Call 'em, speak with Jordan, and know you'll be in good hands.