If I were you mate, better for you buy old coins that has a big volume in the market rather than the other altcoins now that has been here only recently just like UNISWAP and more something like that. However, there are a lot of coins in which are good to buy just like Pundix, AME, CTI, RDD, UTK, XRP and much, much more depending at the top coins in the coinmarketcap anyway.