waves tend to be cheaper to buy, I choose waves for long-term investments. because I think eth has enough value to buy a lot.
Indeed both coins are very potential, and the coin is an alternative to get bitcoin. because the parent bitcoin, Coins from WAVES are still new. So it takes a long process and can be done for the long term, while ETHEREUM is long. and is ranked 2nd from BITCOIN, So I think ETHEREUN is better than WAVES. because ETHEREUM is very potential for the future besides BITCOIN.
If you want to invest into altcoin can gives you profits in a short term, you should invest into Ethereum instead of Waves, because Waves still developing and this coin has not any update recently while Ethereum has been hard fork.