Well.... let's start with the PS2.
One broke, so Sony replaced that one, but then we bought the slim PS2 to replace that when it broke (2)
So PSP, I personally got a PSP and a PSP-2000, (2)
Xbox 360, I bought a Pro, than a 250GB S (2)
PS3, well we got a launch PS3, then that got replaced a couple of times, then we purposefully got a second PS3 as a blu-ray player, then when we moved house we got a slim PS3 for free and now we are probably going to get a 4th... (3/4)