The 659 is an outdated 2nd generation pistol. They were just OK for their day. The 5906 is a much better pistol. I have never shot a Storm, but it looks like it uses a rotating barrel system like the Cougar. I like these, they seem to work well. Both of you shoot them and stop by the PD. Have each one run through NCIC so both are assured of the status. Make handwritten receipts with each other's DL numbers incase something happens later.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball