I bought the j7+ specifically because of a story I read about another robot vacuum doing something unspeakable with a dog accident across an entire living room rug. iRobot was the only company that put their money where their marketing was: they would replace the robot if it ran over pet waste. The first time the j7+ rolled into the kitchen and politely routed around a chew toy the dog had left half-buried in the corner, I felt like the warranty was already paying for itself.
The obstacle avoidance is the headline feature for a reason. The single front-facing camera and LED genuinely see and avoid cords, shoes, socks, bags, the cat dish, the small piles of mystery objects every house accumulates. I have not had to robot-proof a room before sending it in, which is the whole point of a robot vacuum and the bar most competitors still don't clear. The Precision Vision feature is the kind of thing that disappears into the experience until you spend time with a robot that doesn't have it.
The cleaning is quietly strong despite measured suction that doesn't impress on a spec sheet. The dual rubberized brushrolls compensate for the modest airflow on carpet, and the deep-clean test scores back it up — second only to the older s9+ across the entire Roomba lineup. In my house the practical result is that the area rugs look properly vacuumed after a run, not just tidied. The Clean Base swallows about sixty days of dust between bag changes, which works out to maybe six bags a year at the rate this house produces dust.
The iRobot app has matured into something I actually use. Room-specific cleaning works, the scheduling suggestions are reasonable, Quiet Drive mode runs it at a noise level I can leave on while I'm on a call. None of this is exciting and all of it is correct, which is more than I can say for most robot-vacuum apps.
The weak spots are the spots iRobot hasn't solved across multiple generations. Battery is rated 90 minutes and I see closer to 75 in practice, which is fine for one floor and tight for two. Long hair wraps around the axles of the brushrolls and needs an occasional pair of scissors, which is the price of an actual brushroll design and which a Dyson V15's screw tool handles better. Crevice pickup is mediocre. And there is no mopping at all, which is the feature gap that pushes anyone who wants a single-machine solution toward the Combo j7+ or a Roborock.
At the current price, the j7+ is the right Roomba if you specifically need the obstacle avoidance and the pet-waste guarantee. If you don't need either, the older s9+ still wins on raw suction and carpet performance for less money.
Verdict: Buy this if you have pets and you don't want to robot-proof a room before every run. If you want one machine that vacuums and mops, get a Roborock S8 Pro Ultra instead.