I do my charting elsewhere and use their trading platform for orders/trading. A big plus is that their trading platform let you decide if it is the bid or ask that will trigger your stop orders.
Example: If longing EURUSD, your sell stop (stop loss) can be triggered by both the ask and the bid price dependant on which of them you choose. Nearly all brokers only let your stop be triggered by the bid price in this instance. With LMAX you can choose that it is the ask price that will trigger your sell stops and vice versa for buy stops when shorting.
Do not let the cost of being wrong, exceed the prize of beeing right