Each broker has advantages and disadvantages in terms of service. In my opinion in choosing a broker, adjust it to the financial condition. The safe size is relative, wherever you are trading, then the funds you trade have the potential to be lost due to loss or MC. There is a good time when starting trading, especially if you start this business, place funds with small capital first, and after you are proficient in transplanting, You can place large amounts of funds. And in this case it is necessary to choose a truly convenient broker included in the matter of service. You should ensure that your funds are guaranteed or get insurance / replacement of funds when the broker experiences unwanted things, such as loss or bankruptcy.
During this time, brokers with regulation, NFA - American regulation, FSA - British and ASIC regulation - Australian / Asia Pacific regulation has a good track record. However, you in this case need to follow the rules of the brooker, because there are rules set by the broker with the regulation Not wanted to the broker? If the broker provides an answer that you know with your wishes, the broker deserves a partner in trading.