New Booleans are definitely better. Far superior hierarchical / tag-based workflow, no longer requires solid operands, operands can now intersect each other with less likelihood of problems, glitching is much reduced in animation setups, surfacing is generally better, and it is faster to calculate than the old system was.
It also succeeds in many situations where the old one would fail. So, as someone who has been rigorously testing this for a while, I have to say I am very impressed with it and it is a significant upgrade to Cinema's modelling toolset.
CBR