Ordered the Rumblex Plus 4D and am very happy with my choice. Purchased another brand in the past and there is a substantial difference in quality. This plate offers a wide variety of movement patterns and speeds and has a large surface area making it feel very stable. I wish I purchased sooner.
From the first time I've used it I feel better. It's only been a week, but my hip and knee pain are gone for the first time in two years! Feel great during the day and sleep better at night. I'm telling everyone about it!