Waves is actually a good coin to invest in, I think this coin would be one of the lesser known coins that would eventually increase in time. It just needs a little bit of time for the developers and its team to work on the project itself and once there are positive news from this coin then its demand would increase and price would increase as well. In choosing coins to invest in, first check what are the coins which have lesser value as of now then do a research of the supply is enough to be circulated.
Personally, I like Waves because this altcoin has a great ecosystem and big investors love to use Waves because every Waves deal is processed very quickly. I think in the future they will develop Waves DEX platform to serve the needs of ICO projects