For me, this would depend on whether or not you actually have vibration problems. There are many other factors involved, such as what kind of stand your table is on, what material it is made out of, etc. I have my P5 with the standard rubber feet on a very solid Sanus rack with the heavy glass turntable shelf. It is perfectly level, and I have no vibration problems, even with the dust cover on. If it ain't broke....
