Hello, is there any coins that I can profitably mine alone by myself?
I've read a bit about Byteball - it uses hard drive free space and it's most ecological way of crypto mining. I downloaded the wallet yesterday and it's still synchronising.
I think Vertcoin may be a good option but not sure about it.
I have about 0,5 TB of free hard drive space and MSI Radeon R9 270X graphics card. Can I mine two cryptos at once or will it be too much for my PC?

What are some best coins with PoS algorithm?
By "best" I mean stable coins with future and usage with good % of gaining value options.

I've seen NAVcoin and probably gonna buy some, it seems promising. Can you recommend me some more?

Thank you guys for all the replies
So, I assume that long-term investing in ETH and all those ETH tokens are kinda risky, isn't it?
Why there is still more and more coins based on ETH when they all can be shut down so easily?

I've got a question regarding Ethereum in general.

Let's say ETH falls apart with it's price.
How does it affect coins which are based on Ethereum? Do they also take some damage or something?
How they're connected with each other if at all?

Another thing is - I've read somewhere that ETH founder (Vitalik Buterin) can wipe all of your ETH with one command or something like that. Is it some meme or is it actually true?