I haven't read the whole thread but am commenting on your OP.
From our experience, we would not get them again. After walking on the laminate all his life, Jackson STILL does not understand that he cannot 'get going' by taking off, and runs in place nearly every day, and the sound is enough to make me scream! It is so loud...also, they are showing signs of wear after two years. A bone was dropped onto the floor (and it chipped the floor) along with small scratches from specks of sand/dirt. Water spilled, and the floor swelled up and never went back....
BUT, the price was right, and our kitchen looks much better for around $200, and it's a decent sized kitchen. So if you are looking for a quick, inexpensive fix, and your dog doesn't act like a bull in a china shop, it may be a good buy. If you are looking for something to have for many years that works well for the dogs, and if you DON'T like amplified clicking sounds (LOL!), I would pass.
Jackson- DDR/WGSL 5/5/10
Tinah vom Gildaf- DDR 4/29/13