Which coin gave you more return? Investment on Alts or ICOs or BTC? I have been holding BTC for a long time and I want to expand my portfolio. I have ETH holdings as well. I tried trading with many coins but never made of it. The reason I don't want to invest on alts is that those companies will create FOMO and make people buy and after buying you will be rekted.
All of them are really good to invest or to put your money as long as you know what you are doing do some search vey well and for sure you will be fine learn how to do charts so you can know when is the perfect time to buy and to sell. Don't fomo or don't ride the running train or else you will be injured.