No plate for me.
With a well engineered board, I do not believe you need a plate. Especially when you are a recreational carver living in the Western US/CAD.
I tried some of the first generation plates many years ago, and found them not to be hugely beneficial for my style of riding nor the conditions I typically ride in. We rarely have to sharpen our edges in Montana.
I could see if I was racing or riding a lot of man-made snow / icy condition they could be very benificial.
The latest generation of boards from the US / CAD board makers are some of the easiest riding, quietest, great handling on icy condition boards ever for recreational carvers.
Recreational carvers in the US are very interested in a step-in MS boot however.