Actually, the Ortovox X1 kind of sucks. The beacon is actually an analog beacon until you get within 10 meters of the sending unit, and then it finally automatically switches to digital. Until then, you have to do grid searches like a traditional beacon, which are slower than the DTS and Barryvox.
Barryvox or Tracker DTS are the best, and easier. If you don't really think your life is worth that much, get a cheap analog F1. But when your buddy gets buried, and you can't find him, well... At least you saved some money.