Haven't had experience with the crash replacement discount but have gone through several Cannondale frames over the years and always received excellent service. In a couple instances I had lost "proof of purchase" and the local LBS just commented that they would sign off that I was. All were handled as warrantee replacements. However, the last time, it was suggested to me that in the future I might be expected to pay the crash replacement prices. I can't complain, in all, I've owned 6 different Cannondale frames and have paid retail for 2 or them.
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Birth Certificate, Passport, Marriage License Driver's License and Residency Permit all say I'm a Fred. I guess there's no denying it.