Bitcoin is the leader of all cryptocurrency, however looking at the current price of bitcoin, I will suggest one should go for ethereum . Ehereum price is increasing steadily. I am very much hopeful that ethereum price will touch 10000 USD in 2018. You have bitcoins you can purchase ethereum from changelly , one of the best crypto currency exchange.
Again it depends on amount invested for long term or short term. If somebody is looking for a quick gain with a month hold time ICO is the best option. If you invest in ICO of course it must be appropriately rated ICO, your money will be double or triple in a month.
After deep dive analysis I have shortlisted one ICOcurrently running . The name of the ICO. This ICO has low risk and very good team is behind , moreover their product is convincing. After registration You will get 5 tokens free costing one one USD each.
All the best.