xcn cryptonite / mini blockchain is the biggest real innovation in some time, downside is high number of coins
XCN is a great pick. Minichains are so lite on resources you can run a full node on your phone. Very good for network health.
An even more important feature is that XCN's withdrawal limits provide for safe transactions with zero confirmations.
That is just huge, but nobody seems to realize it yet and/or care.