We purchased a Shark Robot on Prime Day - great product! We were so pleased with its effectiveness, that when we got the offer to purchase the Shark Stratos Upright, we jumped on it. Not disappointed! Only regret we have been using less effective products for so many years. I can’t believe how well it cleans my home! My last (and previously favorite) vacuum had a bare floor setting that just threw anything it came across out behind it. Not my new Shark - it gets kitty litter and grandsons’ crumbs!  Thank you!