I recently brought and replaced the main brushes (certified iRobot brand) and found the change in design. When installing the new brushes I found the fit to be a little snug but thought nothing of it. The vacuum (i7+) has ran two times since the change but each time I get multiple errors saying to clear the main brushes. Nothing is wrong with the brushes when I looked and even took them completely out and put them back in multiple times. I am really disappointed with this change and the issues I have experienced.

Last a month or less. The robot even says the rollers should still be good, and the stop picking up dog hair. Only have bought the official ones.

I have had my Roomba for about 4 yrs. Recently purchased a few more rollers only to discover the style has changed and the rollers are no longer as good as before. They ate noisy and pick up far less dirt than before. I hate them and I wish I robot would stop changing this sort of thing stop making functionality changes to my iRobot. At this point it is not even the same unit I purchased 4 yrs ago....it's borderline trash.

A good companion to help keep the rooms tidy. Especially helpful if you spill something on the floor (accidentally fumbled with the sugar and got all over the kitchen floor) at night and was too tired to get the vacuum. These robots do require a bit of maintenance. You'll need to wipe the insides and occasionally snip any tangled hairs that catch on the rollers. I've never had any parts break on me.

We got this as a Christmas present and only use it occasionally. So big surprise and disappointment when one of the rubber brushes split in half! Seems like dog hair shouldn't be such a challenge. I hate vacuuming but this isn't saving me much time.

One of the rollers seized after 3 uses. Obviously poorly constructed.

Defective and they obviously don't care, just look at the reviews going back for over a year. I ordered replacement brushes to replace the original which lasted close to a year. The new brushes broke the very same day. After a very long time on the phone with customer service, they tried to get us to pay for a second new set instead of offering to send a replacement. The replacement they sent broke in the same spot within a week.

Don't waste your money on this one. Originally purchased a 655 and love it. Upgraded and this one is terrible