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Two days ago, I would have recommended Coinbase. I love the interface and the ease of use.

Today, not sure, because there is an issue that prevents Ethereum transactions (buying and selling). Bitcoin and Litecoin transactions are fully functioning per the website

You have to decided whether or not it is a good choice at the time!

If you convert to BTC you can sell no problem then ;)
I dont think theres a problem with coinbase as such i just think the network has been clogged up by ICO's recently. I managed to cash out last week no problem and had my money quicker than stated on their website :) I will be building a mining rig with my earnings - Just waiting for the parts to arrive (if they ever do - wish me luck)

I think that was just because there was an overload of ETH transfers today. I heard that on one exchange ETH went down to just 13 bucks!

I keep hearing horror stories from people about Coinbase. I'm scared to use them now. lol

It sounds like a lot of ETH transactions were suspended today after a crash sell off. This was not just a Coinbase issues, but it was the first place I was able to see the issue personally.

I don't use coinbase so I wouldn't know, but, I'll take your word from it seeing as I'm in the UK :)