Everyone has their own preference for altcoins. Even those altcoins that you think are scams, there are people who make money there, so which altcoins is best in 2018 to depend on yourself.
Agree with you, man. I could show you an example! There is one ICO which is over already but its token listed on couple of exchanges and everyone can buy tokens cheaper than it was during ICO. It is expected release of demo version of product in few months, so the price wll surely rise.
I've already made some money from this ICO and want to recommend you
This one
https://bank4you.io/