The popularity of vacuum cleaner brands can vary over time and can be influenced by factors such as marketing efforts, product performance, customer reviews, and competitive landscape. Rainbow vacuum cleaners have been known for their unique water-based filtration system, which is different from traditional vacuum cleaners that use bags or filters.
To find out the popularity of Rainbow vacuum cleaners in 2022, I recommend checking recent customer reviews, industry reports, and sales data. You can also explore online forums or ask friends and family for their experiences and opinions about Rainbow vacuum cleaners in 2022.