First, I will like to make it categorically clear that , for me, ripple is a no go area right now, atleast until we get some positive news on the project, secondly, who still buys dogecoin this days? This is one of the shit coins with absolutely no use case that was able to make it to the top one hundred on coinmarketcap, and have surprisenly maintained that possible, I think the best coins to invest or buy right now is Ethereum and litecoin.