I'm in the process of installing the Splendide stackables right now. I bought the Splendides after a lot of research because they are built for RV/Marine use. What that means to me is that they probably put some thought to pounding in rough seas and pounding on rough roads when they designed the units. Apartments don't experience this activity, so I discounted the apartment type units made by Whirlpool and others. I'm sure they are fine machines as I have sworn by Whirlpool all my life for my bolted to the ground type homes.
I completed my washer installation last weekend and we ran it through one wash. Wow! I will be able to sleep while it is running. I can't believe how quiet it is! I'll finish the dryer this weekend.