i think ethereum is better than waves, as we all known most of us use ethereum because most altcoins go to you etherwallet. it has a potencial to compete with the famous bitcoin. the price of ethereum is increasing day by day, if you invest in it i think you can gain more in the coming few years.
Of course Ethereum is much better, more loyal, more popular and more stable than most other tokens. Personally, I believe in bitcoin, if bitcoin fails, then go to Ethereum. The rest are even scared to go.