I have the round press and it's really nice. It has a good weight without being too heavy. I use it to keep bacon flat in a 24 cm pan and it covers (mostly) four pieces i.e three down and one to the side. I've used it also for burger patties. It gives food those nice grill lines. You just have to be careful in that food cooks faster when using it! I just wish that it was slightly bigger!
I would recommend this product to a friend.