I bought 20k at $1 price and I'm still holding it now. I think that you should always keep the coins that already listed on the major exchange site especially binance for the long term investment and why? these coins have a lot of potential consider binance will never try to did random listing and any coin listed on binance will have surpassed all of validation and proof of concept to make sure if the concept that already taken by the project will be useful in the future.
Did you know TWT? I have almost 1 million TWT and I have bought that from the so many TWT airdrop hunters.
I just keep it and it's now worth almost 650k USD. I just buy that from the hunters less than 1 cent.
Any project that has cooperation with binance is worth to be owned for the future investment. Remember this.