I say the bonuses are very sweet. I think option to copy traders is also unique and a must for me. I like zulu or Etoro for this. I also like those that offer bonuses or posting bonuses, cause its even more fun that way. Obviously you want to be able to cash out quickly and have many supporting processors. Also, you want a good and fast working platform cause I can see some have slow techs. Also, need superior service and not some knock off.