Definitely get the X-Trainer, if you are looking to do running or high intensity activities while wearing the mp3 player. I picked up a Rio Forge Sport, and returned it after a week. The headphones were crappy and climsy, the case and buttons were cheap and flimsy, and the player was hard to control while keeping moving. I picked up the Muvo2 X-trainer, and its been excellent. Its durable feeling, the sound is better, and I can change playlists while running.