It goes without saying that you shouldn't bother with it if you already have V11-12. However, if the more experienced ones could, you will see the difference right away. Pros: Original vacuum cleaner. Functions equally good, if not even more so than my previous V10 model. Lovely, and a wonderful complement to the family home; the owners value frugality and cleanliness highly. =) With these drawbacks: Weaknesses in the structure are not being improved. The mounts, in my opinion, may be replaced with ones made of aluminum; doing so would result in a slight increase in weight but would also increase the mounts' strength. It is obvious that everything must be destroyed so that it can be recreated again and time again. capitalism.