Awsome Review and Picture Comparisons. This helps a great deal when deciding on which to get. I just got a non/flipper 3 1/2". I absolutely love it, now I would like to get a flipper. Dont know wether to get a 3 1/2" or 3". I have a small sebenza and large sebenza, but since the ergo's are so smooth on the Xm-18's, I know they will feel different in the hand than a sebbie will. The 3 1/2" fits my hand like it was made for it. I just dont know if the 3" would be too small. I wear size Large Gloves.............Though I do realize the 3" would be more non-knife people friendly.
Again, Great Review !!!