I received this mop free in return for an honest review.  At first I had some trouble snapping the two pieces of the long handle together.  The wide head of the mop allowed me to clean a larger area, but was not as easy to get into corners as my previous version.  The cartridge was easy to insert and produced a large fine spray. This was preferable to my old method of carrying the Bona bottle around with me as I worked.  I haven't had to change the cartridge and cannot give on opinion on the ease of changing out the bottles.   However, my cartridge doesn't leak and seems to last a long time.  I like the foam grip as it makes handling the mop easier.  My only real issues with the mop are that it is heavier than the previous mop design I was using and I have to be careful not to get the spray on my baseboards.  I cannot control the spray as well as with the separate spray bottle.