If you are looking for those coins which can give profit in next few weeks than my suggestion for you to make inevstment in those altcoins Which are not at high price and are currently dumped much .
My suggestion for those coins which are dumped are ICOB coin , Liza coin , Digibyte ( not dumped but have more chance to rise up than to go down ) , dogeth , ndoge coin are also better to buy .
And best coin for long term investment is bitcoin itself and etherium , here forcely u will say that Etherium is better for investment Because its price is much down than what it should be ( 0.15btc= 1 eth ) from its average price .