With an alpine-style toe piece, a DIN of 13, and a heel lock to prevent an inadvertent switch to touring mode, the Naxo is ideal for aggressive big-mountain skiers. In touring mode, a smartly designed pivoting mechanism saves you energy by mimicking your natural uphill stride. 4.9 lbs; bcaccess.com
Bonus: Can be used with both AT and traditional alpine boots.
Bummer: It's heavy.