What I've found in my own processing is that the tools available at the time don't seem to do a certain photo or series of photos justice. I waited 4 years to process some photos from Utah because Photomatix Pro and Nik HDR Efex Pro were not around at the time. The tools can make a difference when trying to achieve your vision of what a photo represented to you at the time you took it. The camera records what's in front of it, but doesn't always convey what you felt. That's my story and I'm sticking to it.