How high? How steep? Which way home?
The updated Suunto S6 "wrist-top computer" ($329, suuntousa.com) remains the benchmark timepiece for skiers. Its features include an altimeter, a clinometer (which measures slope angle), compass, thermometer, baro-meter and clock, but that's just the beginning of what it can do. Plug it into your PC, read the fat little instruction manual, and take a deeply analytical approach to every ski day (number of runs, total vert, average speeds and more). Or you can just use its basic functions, which are relatively easy to navigate.