i had the 03-04 TMs, which was the first year of Tms, and i broke the edges after 13 days on snow, i had noticed cracks after 11, and dynastar would not warrenty them because i had got them the on a spring sale, then skied them for a couple days before the end of the season, then broke the edges in the first two weeks back the next season.  i loved the ski but was severely disapointed by the durability of the edges.  they may have improved this problem over the last couple years, though i have seen nothing saying it.  also i'd like to note that the way it broke was 4 inches of edge jabbing throught the base and into the core.