I've just straightened a RA and a Sumora shaft a week ago. Both will bend like any other shaft. I have straightened many shafts and when you do the job right they function perfectly well. Based on my experience and the force I needed to exert with my hands to straighten a RA Sumora, Riffe, Ray Odor, H Dessault, Pursuit, and others shafts, I find the RA and Sumora to not be any harder to bend than average. Of all the conversations I had with guys claiming the RA shafts to be more bend resistant, none have actually tried to bend the shaft between their hands, while this is something I do all the time. There must be some psychosomatic effect at play here for them to claim those rusting shafts are more bend resistant. If you're curious and plan to come over to check out Pursuit gear, I can let you bend an RA shaft that I have here so you can see for yourself.
With all that said there are definitely shafts that are softer than others, I don't like those. But consider that there's a sweet spot between hardness and ease of straightening the shaft back. You can use an 8mm shaft that is more bend resistant, but some fish at some time will bend it. Then it will just be harder to straighten on the spot. I like the 7mm shaft, it has good bend resistance and is easy for me to straighten. Those of you who have seen me straighten a shaft know what I mean.
Matt, where exactly did the DW shaft snap and how did it happen?