What the heck is MSC and XCP?
Mastercoin and Counterparty, both run on Bitcoin network as their transport blockchain.
Out of those two XCP is a better choice, but neither of the two can compare to NXT.
Bitcoin network is just slow to trade on.
Thing is with xcp is they are just arbitrary tokens and completely unnecessary, correct me if Im wrong but I seem to remember when researching when counterparty was first announced that the XCP tokens were a) not needed and b) essentially worthless.