During our ASt1 course my mamut pulse really kicked ass, also if everybody in your group has one it will tell you who burried has a pulse and who does not, its sad and "life boat tactics" but at the end of the day is a good feature..Shoping by price for a random beacon is not the best idea, contact an instructor on what works best. A few people in our course last witner had cheapies and they proved to be junk in our mock rescues.... Mammut Pulse
we sell them and lots of other great backcountry saftey gear at Bow Cycle South in Calgary.
WE also reccomend takeing a AST1 course before even thinking about heading out. Zac's trac's and Hangfire are great....Zac's trac's is local and in calgary...Drop by our shop and we can hook you up with Lori....Also Hangfire out of Golden was great too