I think you forgot to add one of the most popular sites there is and that is fortune jack. Fortune Jack is very popular and a lot of people are making use of it, though I can't really tell the level of their security, but I haven't heard or read any bad stories about them ,just like you will hear about other casinos (there might be, just that I haven't come across one before )and people who I know that are making use of it says that the site is good and they haven't had much or any issues with making use of it.

Even the ones you have mentioned here ,you can't vouch for them to be highly secured. But it's always best for newbies to go for popular casinos instead of the ones that are not popular ,because that way they are lessening the risk they take. Going for a new casino with no reputation yet is a huge risk for anyone