I trust both of them, thinking that Ethereum will be more profitable.I think it's the first resource for icolar as well as the simplification of continuous updating

Invest some of your investment capital in the ICO crypto projects. The rest of the money of your wallet, I suggest keeping it in the etherium, as this is the most reliable and proven way to save your money.

Yes, absolutely. EOS is an ERC-20 token and can be held by any ETH address.Transfer from exchange to your ETH address on your Ledger Nano S. You can then use something like Myetherwallet (MEW) to view/utilize the EOS tokens on the Ledger. Note that you need to hold a small bit of ethereum in the same address so that you can pay gas fee for any subsequent transactions you conduct (sending EOS elsewhere, let's say)

I think it's worthwhile. Now the cryptocurrency is still in the early stages, and you can get rich returns from it. The premise is that you need to fully understand the knowledge of cryptocurrencies and don't invest blindly.

Yes I confirm I also see IGNIS finally in Bittrex but it says "IGNIS wallet is under maintenance". At current price of 0.49 cents based from coinmarketcap, I think once Bittrex completed the wallet maintenance, price will drop further as usual behavior for airdrops is once listed, sell right away but for me, I will hold and see what the developers plan for IGNIS.

Of course the functionality of the coin is the main factor of the success. If coin give some benefits to its holders this coin wooll worth more because there is more value into it.