The great WonderGrill plates to roast vegetable without getting your stove dirty! The most important thing in this plate is the height of the inner ring in which all the moisture from the aubergine or other vegetables is collected. That is also the difference with other plates where the ring is lower there, so the moisture still runs on your stove.
We have been using these plates for years and enjoy it. A few things:
Do not put the plate in the dishwasher. Dry it well after washing
The plate gets very hot during blistering, so be careful and use tongs to turn the vegetables!