Well, you can test them out to see which is better. Some of them do not charge fees for deposit and give greater bonuses and lower spread and better service support and fast liquidation so you should go with them. Some of them are more experienced, have more advance trading platform, and have more volumes traders so it helps them not to snip you so they're worth a try. Some of them have more free money to give away in contests so you can try them. Some of them like Etoro have a dynamic social network that allow you to copy other successful pro trader and help you make money so why not.