NO, I was not talking about Dave...

...
FYI, out 580 cost us about 14K about 7 years ago. I know it digs deeper than 8.5 foot as our neighbor borrowed it to finish digging his daughters basement when the excavator he was using broke. I know it sucked for him, but it worked. We use it to work on Field tile and to keep out ditches clean. Most of our fields have a tree row and a ditch around them on one side. We have to keep them clean to keep the tile working or irrigate going. I think a 485 would be too light for the job.
If we would have the conditions we have in the market now, I would own what Dave is talking about. A mini x would do more work and be more versatile, but they were more expensive back then. This is another engine to maintain, but our farm does not have many tractors, and what we do have is paid for, so a bit of maintenance is nothing and expected.
Everyone has needs and opinions, and it comes down to that.