I recently purchased an OF-211(L) mainly out of curiosity. My average search depth with it is the max of 236.2m while with the OF-105 I am at 221.7/261.3. My record depth with the 105 ia 711m after 1000s of bombs. With the 211(L) I hit Megan Stone at 762m with the first 10 bombs or so. I got it for 115% so I think I will stick with the 211(L) until my depth is equal or greater with the 105.