Here is a good source to decide which altcoin to invest in. I would never buy a dead altcoin with no development except Doge. Doge is unique and will be successful without much development.

Source:
https://twitter.com/el33th4xor/status/1068856384983363585?s=21dead alts are:
- Verge
- Holochain
- Bitcoin Private
- Pundi X
- Poet
- Decentraland (MANA)
DOGE is just a meme coin and hype because of Elon Musk, in my opinion it's better for you to invest in Ethereum than DOGE, because it's safer and definitely gives you profit, so you don't need to hesitate or be afraid to invest in Ethereum and of course the project from Ethereum is very good and popular.