[Updated 6-7-2023] Almost at three years of constant use now and we finally had a significant failure--the pivot on the front roller-ball wheel broke off. As noted below, however, Eufy offers replacement parts for seemingly every part of this vacuum (you could pretty much build your own just out of spare parts) and shipped me a new wheel for $10 with free shipping. I ordered a replacement battery at the same time since our runtime had dropped to about 80 minutes. Installing the new wheel and battery took five minutes total, and the vac now rolls smoothly again and has a runtime back up to 100-minutes plus.One other update--it appears that Eufy updated the software to prevent the "light as obstacle" problem. I hadn't checked in months but noticed recently that the vac now moves through sunlit bright sections on the floor without any issue. Upgraded my review to five stars since this product has now far outperformed my initial expectations. [Updated 8-30-22] Two years of running two days a week and the G30 is still going strong. It's a bit noisier than it used to be, but it still returns home with a canister full of pet hair after every run. I've found that I haven't had to replace the consumable parts such as brushes and filters nearly as often as recommended--which honestly isn't that often. Vacuuming the filter after each run when emptying the canister seems to keep it working well beyond the suggested 200 hours even if it's not quite as efficient as it was when new.Eufy should also be commended for its attitude toward replacement parts. You can find everything from filters to wheels to motors for the G30 and other models on Eufy's site, along with videos for how to replace the parts yourself. As we all know, many manufacturers seem intent on making you replace an entire product when something simple breaks or wears out. It's good that Eufy is being more responsible to its customers. (I won't say "to the planet" since honestly, the best thing for the planet would be for all of us to go back to brooms and dust pans rather than robots.)[Updated 7-28] This is our first robovac, and thus far we're loving it. We have two cats and two dogs, and have spent every spring watching furry dust bunnies gather under the furniture and in the corners, even with regular cleaning. I had a chance to buy the G30 on sale as an early adopter, and having liked other Eufy/Anker products, I took the chance.We currently run it daily, and it comes back completely full of animal hair every time--which is both gratifying and a little eye-opening as we clearly had no idea how much fur was really floating around the house.It's thin enough to get under most of our bigger furniture, it's quite quiet (though we pause it if it's cleaning near us when we're watching TV), and it's been able to get over the thresholds between our rooms even though they're right at the stated height limit. I expect this is in part because they have a rather smooth ramp to the top--if they were more squared off on the sides I'm not sure we'd have been so lucky.As for the quirks:1) Like others, we initially had some issues with the side brush sometimes getting caught on our area rugs, causing the vac to reverse direction. Two things corrected the problem for us. First, I discovered I had not been inserting the side brush quite firmly enough--it required a bit more pressure to fully seat into place, which raises it just a bit higher off the floor. Second, our rug pads were very close to the edge of the rugs. I trimmed the pads by a couple inches and then curled the rug edges downward, toward the floor to make the edges sit more squarely on the hardwood. That solved the getting-caught problem for us, so it might be worth a try if you encounter the same issue.2) It can be blinded by strong sunlight. (See the video.) We found that it would sometimes approach places in our kitchen where morning sun was hitting the floor, and it would treat the sunlit squares as physical obstacles. Eufy support suspected this was because the drop sensors on the sides of the vac were blinded by the glare. Small pieces of tape over the sensors did help, but we instead decided to simply run the vac at night. (I'd also commend Eufy's tech support for being very quick to respond and helpful.)3) Our hundred-year-old house has antique furnace grates with relatively large holes (maybe 3/4-inch at largest). These holes seem to be large enough that the drop sensors occasionally get spooked and cause the vac to skirt the grates--not a big deal, but it does slow down the cleaning process a bit.4) The orientation of the charging base to your floor plan seems to have an impact on cleaning efficiency, at least in our case. I had originally placed the base on an angled wall in a bump-out, which caused the vac to start cleaning at a diagonal to the walls. I didn't see any particular issue with this, but after about a week, I moved the base to a nearby but slightly more hidden location on a wall square to the floor plan. Before the move, the vac averaged about 532 sq feet of cleaning per session as reported by the app. After the move, it's averaging 672 sq feet of cleaning and seems less likely to get confused in the odd corners of the house. So experimenting with base location may be worthwhile to optimize the vac's efficiency.All in all, a good purchase, particularly on sale.