If you're looking for a coin that is well-known with dumping and pumping, it should be the dogecoin and that is why the coin failed to improve dramatically even before the dip in the crypto-currency market.Though dutchcoin isn't making a good show now but this is a good time to invest in it, most other coin are really low, because of the major dip on bitcoin, Dutch seems to be manipulated but it is a good coin and would make a very good stand.
Remember invest what you can afford to lose.