Adidas miCoach Pacer
Best for: The casual athlete in need of some motivation
Details: The faceless Pacer won’t display your stats, but it does speak them in your choice of 31 voices (including Reggie Bush’s). In Coaching mode, it urges you to slow down or speed up in order to keep you in your optimal heart-rate range. “It’s a fun tool,” says Lovato, who liked the accuracy of the feedback. “But setup took a long time and that frustrated me.” [$140; micoach.com]
Rating: 7 out of 10