I am delighted to see this thread as I thought I was the only person who was constantly buying new mops etc, I too have a collection in my tall press in my utility room.
My problem was that I have timber floors and porcelain tiles, (white in the hall and shiny black ones in the kitchen), everyone warned me that they'd be really hard to keep clean but I love them. My husband broke my last good mop that I loved, it really did the trick so I was on the hunt for a new one.........
I have recently discoved a fab mop in Dunnes Stores home section, it's €12 and comes with two refills, one wet one for cleaning and a dry cloth for drying/shinning - no detergent is required and it has a 360 degree head so really good at getting into the corners, you can wash the wet cloth in the machine too - I would def recommend but the only thing is that I didn't see replacement cloths available to buy seperatly but I did find it so good I bought a second one last night (as a reserve) for €12 you can't go wrong!!!!!!
Hope this is of help to people.............