Question: what is the best carpet cleaning machine to buy?
Answer: Best Overall: Hoover Power Scrub Deluxe Carpet Cleaner Machine. ... 
Best Portable: Bissell Little Green Portable Spot and Stain Cleaner. ... 
Fastest Drying: Hoover Smartwash Automatic Carpet Cleaner. ... 
Best for Pet Hair: Bissell ProHeat 2X Revolution Pet Pro Full-Size Carpet Cleaner.