I'm with Elof concerning the R5 vs R4 handle. While I am a huge fan of the R4 handle, I don't care much for the R5 handle without the contours. I really think it needed some contouring, it just didn't feel right to me like the R4.

If only I could get a choilless 5.5" blade on the Rodent 4 handle, that would be heaven......