Ilias Biris
I have been using the parkis solution, daily, for more than a year now. My parkis is located in a tight storage area, with 2 folding bikes and a child's bike, and carries my own e-bike. Even with the battery on the bike (which makes the bicycle heavier) parkis is very simple to operate. It saves me space and grief as I can now walk in to the storage area without having to shift bikes around.
One thing to consider is the clearance of the rear-wheel fender, which is clearly documented in the parkis manual. In my case I have a few millimetres clearance, which is great, but this should be carefully planned for to avoid surprises.