iRobot Roomba 530
Pros:
- User friendly, has only 3 buttons for clean, dock and spot clean
- Excellent on hard wood, vinyl, carpet
- Never fall down stairs
- Do not trapped by electrical cords
- Clean under furniture
- Fairly quiet compared to standard vacuum
- Keep your pet or kids entertained
Cons:
- Pet hair easily stuck into gear drive, side brush cannot rotate afterward (bad choice for pet owner)
- Side brush breaks easily (need replacement every few weeks)
- Require frequent emptying of the dirt bin (does not indicate when dirt bin is full)
iRobot Roomba 560
Price: $349.99
Pros:
- User friendly, with new feature to schedule it to run 7 times per week
- Excellent on hard wood, vinyl, carpet, and also on concrete
- Never fall down stairs
- Do not trapped by electrical cords
- Clean under furniture
- Fairly quiet compared to standard vacuum
- Keep your pet or kids entertained
- Can pick up pet hair (great for pet owner or people with allergy)
- Side brush breaks easily (need replacement every few weeks)
- Require frequent emptying of the dirt bin (does not indicate when dirt bin is full)
iRobot Roomba 770
Price: $499.99
Pros:
- More stages of cleaning, with the side brush spin in both direction