In my humble opinion, There's a lot of ICO and promising token around us but this is my top pick:

UTK - The new platform that is aiming to be the future of online payments and can surpass PayPal in terms payment methods.

Ethereum - No need to say what's about it but it is one of the best coin to invest with for the current time.

Eos - It is still on its experimental and improvement stage but can possibly surpass ethereum capability.

Ripple - Pretty decent coins with large community and supporter.

This is only my suggestion its up to you whether to buy this coins or not just be sure to be careful and know all the facts and research its whitepaper or know its capability.