I loved my MiniDisk player, but the arbitrary roadblocks that Sony put up for how you were allowed to use the device and the poor quality of the management software were so infuriating that I vowed not to give Sony another cent for ten years. (I stuck to that promise too, even avoiding the temptation of the beautiful PRS-505 e-book reader. That turned out to be a good decision when the first Kindle came out shortly after.)