Bullion or Numismatic

I'm looking for some advice/ info regarding buying bullion vs. numismatic.... Any help is greatly appreciated! A dealer was telling me that numismatic is better because you can make more money, is less of a risk, it cannot be confiscated by the government, and that large purchases do not need to be reported to the government. Does any of this sound legit? Is it good to buy more of one or the other, all of one, etc? Thanks in advance!