Shark Cw240 H2o Vacuum Which Water Filtration Vacuum Is The Most Effective Subtitute To Rainbow?

Which water filtration vacuum is the most effective subtitute to Rainbow? - shark cw240 h2o vacuum

I'm sold on the system of water filtration vacuum cleaner. I do not want the noise of the air, especially now that my son was diagnosed with asthma. However, Rainbow is too expensive! I'm looking for the most effective solution. Here are the 3 most important are

Shark CW240-$ 141.51 at Amazon and other websites. Comments fairly well, but no HEPA filter. But here is my priority, that it works in a system of water filtration.

Water filtration vacuum to the hydraulic front-$ 299, is equipped with HEPA filters and much more, but is only available on their website. No comments available, but the product looks good.

Thanes H20 Vac-$ 199, has had a HEPA filter for the AMT) money and other essential parts of the vacuum (suction head for cracks! I like the marketing strategies and Scammy. Comments are only on their website.

So, what do you think the practical and effective?