FL pedestal/drawer bases
I'm on my second pair of LG WM0642 washer and matching electric dryer (first pair stayed with the house when we moved); second pair in use since 12/2009. The first pair didn't have the pedestals because the dealer was ignorant and/or unhelpful regarding the height and being unwilling to take them back in case I was unsatisfied by having the machines raised too high. (They are the model with the controls on top, at the rear instead of the cubes with the controls on the front panel.) They sat on a concrete basement floor with no vibration problems. From upstairs, the washer could only be heard at spin, which sounded rather like an airplane. It wasn't loud, per se, so I think it must have just been the high pitch that made it noticeable. When I bough the second pair for the new house, I was able to find dimensions for the specific pedestals for this model (not as tall as normal to account for the location of the controls) and after measuring was assured the controls would still be reachable, so I got the pedestal drawers. There aren't a ton of things that will fit in the lower-height drawers, but they make a huge difference as far as not having to bend so much to load and unload. And there has been no issue with vibration. The machines get bolted to the pedestals, and mine sit on a linoleum floor over concrete slab. The spin is even quieter on the new washer. The laundry room is at the bottom of the stairs that lead off the living room/front hall of our split-level and if the TV is on, we don't even hear the machine until the end of cycle song plays its tune.