IMHO, the DA Para is the acknowledgment that shooters and LEOs want double action. Lawyers want double action. everyone wants double action. It is faster, can be more reliable and has a stigma of being safer.
I don't know why the Double Eagle line has not been more popular. It could be the limited mag capacity. I guess people think of Colt as a single action company. Maybe this new para is exactly what the marketplace has been looking for.
No need to flame me about the greatness of single actions like the BHP and the 1911, They are great platforms, I used to be a die hard single action carrier, but I feel the double action of "safe" action, is faster and safer.
There are certian,very restricted cricumstances, where I would prefer to have a single action gun, but they are few and far between and I don't see myself encountering them by chance.
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-Essayons