Need to find a commercial carpet cleaner, how are the reviews on the RugDoctor Pro?

After reviewing feedback for this machine I was not impressed. One review states "I have had the rug doctor now for a year and all of the sudden it quit working so I have tried to call the company several times. They have left me on hold for hours. I have now been without this machine for more than six months, and after paying 800.00 for it you would think they have a number you could call to try and fix it, but they don't so I say if you are going to purchase the rug doctor then you better be some sort of handy man." For the price range of this machine I would suggest a couple of other highly rated machines. I like the Sanitaire® Model SC6080 Commercial Carpet Extractor. Sanitair commercial carpet extractor. Quickly and easily cleans carpets and hard-to-reach areas. High-performance, three-stage motor is powerful enough to clean any size room. 100 psi pump and 9-gallon tank capacity. 137" waterlift suction motor.Automatic suction safety shut-off if unit tips over. Extra-large easy-roll wheels and molded handles for excellent maneuverability. Includes 15-ft. hose and detachable 12" single jet all-steel cleaning wand. 50-ft. power cord. UL Listed for commercial use. Manufacturer's limited one-year parts/labor warranty. Shipping weight 125 lbs. Another more economical model would be the Carpet Pro CPU-2 Commercial Upright Vacuum Cleaner by Smart Choice. # Metal Construction: Metal Handle, Metal Bottom Plate and Metal Brushroll # Filtration: 4 Level Electrostatic Foam Filtration # Cleaning Width: 12 inches # Bag: Panasonic U-3/U-6 Genuine Bags

The Rug Doctor Mighty Pro Carpet Cleaner is the right choice if you want to clean your carpets and get professional-looking results. Read more by clicking on the link below....

The Rug Doctor Mighty Pro Carpet Cleaner gets rave reviews and is the right choice if you want to clean your carpets and get professional-looking results. This commercial-grade carpet cleaner takes its job seriously, removing tough soil and ground-in stains with ease. The downside? Price. At more than $600, the Rug Doctor Mighty Pro Carpet Cleaner is expensive. May want to rent it instead of buying.