I have a close friend who absolutely would have taken a DC plan if it were offered, since he does not believe the city he works for will be able to meet its financial obligations. It was not offered. Granted I haven't talked retirement with him in about 10 years, so it's possible a DC plan is offered now.
I feel you have to watch your plans like a hawk, because as a pension crumbles there's often a window of opportunity where they offer to "buy you out" (basically turn your DB into a DC mid-stream) - and sometimes the deal should be taken.