As stated earlier, my EX21 has little to no vibration. When I bought it, General International had a promotion on and the saw was less money if you took the stand with it, even though I thought I didn't need it. But what the heck, I ended up taking the stand and am thrilled I did. Before setting it all up, I bolted a 1/4" piece of plywood on top of the stand that extends on each side. This gives me a 12" shelf on each side of the stand to hold tools. Halfway down the stand I inserted a 1/2" piece of plywood to create another shelf to rest my feet. I also put my foot pedal there. This plywood is bolted to the the cross pieces of the frame of the stand. I believe this also helps to keep everything sturdy.
Mike