I think all those coins are good investments if your looking at the longterm (1 year +)
Neo could easily hit the hundreds once ICO start to participate on its blockchain starting in the next month or so, the other 3 are all undervalued if more ICO start to hit and once the tech catches up (Smart contracts on Waves etc)
Waves is now a short term (1-3 days) boon in the making. Launch event for the new client is tomorrow, and the new client and DEX go live on Friday. Targeting $30+.
instead of waves being more suitable for long-term investment,
and not suitable for the short term, because it is very risky