I opted for the refurbished model without wifi. The mower did have old grass stuck to it and other things in the box when it arrived, but it wasn't a deal-breaker. So far, holes in the yard have been the only issue for it. Just fill them up with some sand or dirt and monitor the operation of the mower until you've removed all obstacles.

I could never get it to connect to my Internet

Just to get the bad or inconvenient or bothersome stuff out of the way. I purchased a refurbished non wifi mower and expected it to be in better shape, though this was stated in the description, I thought would be cleaner and some of the plastics are faded and the display cover is cracked as well.
Turned out that whoever shipped the mower forgot to reset the code to factor settings, and they shipped the mower without cutting blades so it was impossible to test it or even cut grass out of the box. Of course I already went to the trouble of laying out the wire before I found this out, so big let down. I did run into some very frustrating starts, the mower would not find the wire and would throw a lot of error codes. After awhile I read on reddit to try to unplug and plug back in the perimeter wires and that seemed to fix it; again just really bothersome because it was hours of attempts at this point.

Now with all the bad out of the way, the mower is working and functioning perfect! It looks beat up and well used but the battery lasts more than enough to mow the whole back yard without multiple recharges in between. I am very happy with the performance and quality of cut so far. I can't speak to longevity or durability just yet but it's comforting to know that all part to the mower are available for order through this website.

I bought this last year. Last year it was not noisy, but this year it sounds like a jet engine! There is no way to command it to turn so many degrees. For that reason, it may go for several hours and not mow certain places. They should provide software updates. For example they could upgrade the software to have a turn x degree command.

My children got me the RM-24 three years ago when my right hip was bothering me so much that it would take me over an hour to cut my yard that I use to cut in half an hour. I love the way it knows when to recharge and goes to its docking station. It cuts my lawn every other day. Occasionally, there is a problem but it is easily corrected and away you go.
My hip was replaced and I could cut the grass with my old gas lawn mower but why? "I'm Living the Good Life"
This was by far the best gift that I have received and I thank my children for it every year.