Afer tiling the whole house here, I've had my Floormate for two years and wouldn't be without it. It's done a great job, though I'd be very curious if the new one, with the grout brushes actually cleans the grout lines. That is one drawback to tile.
Also, I only used the Hoover solution for cleaning, in the recommended amounts. The machine though wouldn't dispense the cleaning solution. I took the machine apart, not an easy task, and found the solution had crystalized in the dispensing tube. I used some heavy wire and cleaned that out. Also, with having a dog, the pickup tube was badly clogged with dog hair. More digging and cleaning. Now it runs again like new.
Also, I only used the Hoover solution for cleaning, in the recommended amounts. The machine though wouldn't dispense the cleaning solution. I took the machine apart, not an easy task, and found the solution had crystalized in the dispensing tube. I used some heavy wire and cleaned that out. Also, with having a dog, the pickup tube was badly clogged with dog hair. More digging and cleaning. Now it runs again like new.