You will also need the adapter if you are going to have both
I have my set side by side and they work well with the universal adapter. It came with my set, although, I bought them as a set. Yes, get the stacking kit. I believe tha the top has to come off of the washer for it to fit properly. There is one thing that is important to remember with these dryers, they are not like a typical American Dryer. Normal is still really damp when clothes are finished. This is what Miele told me as well as the people at Luwa Distributing, Germans like to Iron, so Normal would be a little bit damp dry. When setting your dryness level, make sure you set it on more dry or extra dry, I usually opt for more dry.They also tumble two dirrections, kind of unique, and very effective when drying. Most of the settings are sensor programs, I usually use Normal and set it for the anti crease .Once in a while, somethings will not be all of the way dry if it is a really thick article of clothing, I just toss it back in for 20 min, and bam! it is dry. One more thing, I do not use fabric softener like I once did after getting a Miele. You just don't need it. I have it and use it once in a while, I just find that things do not have the static cling like they did with the Maytag dryer that I once had. I am not over drying my clothes. If you do opt for softener, don't use sheets in the dryer, use it in the washer. There is alot more airflow in these machines. There is a likely hood that it will just, and this is what Miele said, just clog up the machine and end up in the fluff filter. I have done clothes for one of my friends just to help her get caught up, and the towels I wash here always come out fluffier than they do at her house. That is why she loves it when I wash for them.If you have any questions about it, just e-mail me, I have had this dryer for three years. Cheers!