Buying btc is better than investing in ICO. There are many reasons for this. First of all, bitcoin is the strongest cryptocurrency on the market and by investing your money in this coin, it is hard to lose any of your money. Second, there are too many ICO and I believe that is not good for us at all 
If someone has available USDT and wants to invest in Bitcoin now, I would advise them to pause for some time, as Bitcoin is now heading for a up trend with hit 8300 on tonight. The important thing is not to FOMO. Sit down, calm, I think the best buy is to wait for Bitcoin to return to 7750 - 7800