Got a new GPS and wanted to see what map set was best for trail /adventure riding. Here is a comparison of the various map sets: Garmin Topo 24K 2012 vs Garmin Topo 100K 2012 vs my old 2004 Garmin Topo West 100K......and the winner for most trails and most legible, visible maps for trail riding is.... 2004 Topo West. Here are two map comparison w/ areas I'm familiar with. Area 1 : Utah, Eagle Canyon by Swazye's Cabin in the San Raffael Swell 2004 Topo 100K 2012 Topo 100K and finally the map the one would assume would provide the most trail detail...... the brand spanking new 2012 Garmin Topo 24K: How is it possible that at the same resolution the 24K shows many fewer trails than the 100K series. The 100K 2004 & 2012 are identical on trial, but I prefer the look and clarity of the 2004 version. It's easier to see the trail on the GPS while riding since the topo features are more simple. The 2012 100K has too much shading and relief for easy viewing while trail riding. Area 2: Hackett Gulch, Colorado by Westcreek. 2004 100K Topo: 2012 100K Topo 2012 24K Topo Heck even the City Nav has as many trail as the 24K Topo! 2012 City Nav: Let me know if you would like to see other areas in Co or Ut.