Yes I use subdudes under my 100s when used in rooms on upper levels of the house. Its the floor construction (suspended plywood) that matters not the cover type. If you jump up and down and get any vibrations transmitted to items in the room then the subdudes should make a difference.
I think I read somewhere that the smaller models are less efficient than larger but if ratings are similar most likely not much difference with these two models specifically.
I think I read somewhere that the smaller models are less efficient than larger but if ratings are similar most likely not much difference with these two models specifically.