It's only boring for the investors that look at the top end on the coincarketcap rankings as they all follow bitcoin. Look at the bottom end of the top 100 and you can make a killing if you pick the right altcoin
actually none of the altcoins really follow bitcoin even the top ones. the thing is, when bitcoin falls all of them fall harder which has created this illusion that they may be following bitcoin. but if you compare charts together you can see that there are enough exceptions to make this untrue.
as for what altcoin to choose, you don't choose a coin that has dropped. you choose a coin that is about to rise or is getting pumped. otherwise there are coins that have dropped and if you buy them you will end up buying something that either never rises or will take a very long time to have any kind of pump.