Bitcoin is quite a slow coin. It can only handle a small amount of transactions per day, which is why people started using fees.
Miners prefer to mine for the transactions that have high fees, as those will yield them more money. Now Bitcoin is becoming more popular, its maximum amount of transactions per day isn't really growing. Therefore, the fees rocket up, simply because everyone wants their transactions to be confirmed quickly.
I'm not sure about Ethereum's fees, but I believe they are quite low too. At least they are lower than Bitcoin's fees, although I read about Ethereum's fees entering the 1 USD range a couple months ago though, if I remember correctly.. BitInfoCharts shows that the average Ethereum Transaction Fee is about 30 cents now.
Litecoin fees are almost non-existent and the transactions are very fast. It shouldn't matter what wallet you use, as it's the network fees and not the wallet fees that you have to pay. The same source also shows that Litecoin's Transaction Fees fluctuate around 10-15 cents.
It shouldn't really matter, as the transactions are separate for each cryptocurrency. As long as the wallets don't cost any money and don't charge any fees, the cost-efficiency should be the same.
I'm not aware of Exodus' system, so I'm not sure. What I do know is that Blockchain.info doesn't charge any additional fees and allows you to customize the transaction fees you send with your transaction. Maybe it's because Exodus charges fees or doesn't allow you to customize fees? If so, it could be a pretty smart practice. Anyways, I've never used Exodus, so I'd wait till someone who's an expert on that area comments here.
I hope that will help you further :-)
If you have more questions, feel free to ask here or PM me.
PS: I've recently switched from Blockchain.info to Electrum and I must say: Electrum is a really nice wallet. I recommend you use that one. It's easy to use, very safe and has useful tools.
Regards,
Trump
This was IMMENSELY helpful, thank you for taking the time! I'll be using the bitinfocharts site frequently, I wasn't aware of it. Just curious, what made you switch from Blockchain to Electrum?
You're welcome :-)
My switch was initially just because of my Bitcointalk account security. I saw that many accounts were hacked and if my E-mail account is hacked, my Bitcointalk account is gone as well, I believe? Anyways, to avoid any of that trouble and keep my account security high, I decided to sign a message.
Electrum has a very easy "Sign Message" function, whilst Blockchain.info does not have one, as far as I know. So, I decided to sign a message through Electrum, after which I fell in love with it. It just felt far more "comfortable" to me than blockchain.info.
Regards,
Trump