I'm new to using a Mac so I wanted something that I would consider a value.  Brand new was too rich for my budget but this was just right.  And being a 2017 model it's still early in its expected lifespan.  To hedge I did choose to get an extended warranty but I'm hopeful I won't collect on that bet.Shipping was prompt.  It came boxed in original packaging (a box inside a box) and looked brand new.  It included a new looking Magic Keyboard and Mouse.One of the big draws for me was the 4K display.  It is simply beautiful.  The 21" size is great for me.  It fits nicely on my desk.It came with Mac OS Catalina installed.  Yeah, no immediate upgrade.There are times when it takes a few seconds to respond, primarily from a locked screen.  I'm not sure if this delay is due to bluetooth connection to the mouse/keyboard or having a HD and not a SSD.  You should have a bit of patience with this.  If you don't you may want to choose another model or plan to spend some money to have a SSD installed.One disappointment was the Bluetooth as it would only turn on intermittently.  I did a lot of research and found this was a fairly common issue with this model.  I tried lots of software changes to try to fix it but to no avail.  But I really didn't want to send this desktop back so I instead chose to buy a $19 USB bluetooth dongle (by Hideez Key) and the problem was solved.  With 4 USB connectors this wasn't a big loss and I haven't had any problems since.Overall I mostly love this iMac.  I consider it a good value and look forward to using it for years to come.