You can find a whole range of robotic pool cleaners on the market. Brands take the changing expectations of users into account to improve the performance of their models, some also take into account their past mistakes in the design of previous generation robots. In any case, it is logical to look for a robot that is easy to use and efficient in its main task: cleaning the pool. The speed of cleaning is also a criterion appreciated by users. In our review, the Dolphin Swash cl meets this criterion perfectly. Versatile models are also popular, provided they do not have any unpleasant surprises in store, i.e. those that can both clean the bottom of the pool and play Spider-Man on the walls to reach the waterline. This is the case of the Zodiac Vortex OV 3505, which is not only versatile but also an intelligent model.