Im sure there will be more great ICOs to invest in 2018 but these are my current investments

SRcoin - SRCoin is done by an already operational company with great record. Demo releasing soon and very realistic goals.

Havven - Aims to bring stable cryptocurrency in the current volatile market. Great potential and safe.

Sandblock - Pretty cool project that aims to make customer engagement easier. Definitely a niche market with little competition.