I had issues with the coins I bought using Cryptobroker and it was nice that their support responded immediately and got everything fixed.
Just opened an account last week, verification went smoothly after following their instructions, not as difficult as some people proclaim. Website is state of the art, and everything seems secure and intuitive.
Plenty of verification required. Photo ID, bank statement and picture of you. Once that is done, it is a very nice site though.
Smooth trading transactions and easy transfers. Worth investing.