Garmin's GPS-toting watches have never been great lookers, but the company seems to have really made a point to ignore aesthetics for the Forerunner 310XT (above), a new nav-enabled watch tauting an impressive (for one of these) 20 hours of battery life. Also new is the Forerunner 405CX (after the break), an update to the company's popular (and rather less offensive looking) Forerunner 405, adding "increased accuracy" in calculation of calories burned and comfort improvements to boot. Both work with the company's ANT+ wireless monito