Olymp is a good brokerage with good order executions and convenient trading platform. As I understand, it's their own platfrom and you won't find the same in any other brokerage company. There are almost no lags, only microlags make take place, but they're very rare and usually don't affect trading. I enjoy the fact, that I can adjust my indicators with my own Algorithms and combine indicators to get more clear result. There is also bonus system, including 100% deposit bonus match. Honestly, I don't like such things, but it's really cool to get addtional deposit money that you can use when trading. Also, if you want to try sth or test strategies, you can use Olymp demo-account, that is 100% copy of Olymp Trade trading platform, but with demo-money (up to $10,000).