since everyone is advising you to make research first so what i will tell you is just follow your instinct since these coins are all good enough for long term holding.

but if you had a good amount to invest?never forget to buy Bitcoin as well because thats a assurance if ever you fails from those 3 though i am pretty sure that there is at least 1 or 2 that will surely growth in future.

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keeping for 2-5 years from now?that is more than enough to make some good profit,though only BNB and EOS is my bet on those 3 but atom might be good also(i hope)