Can someone recommend a trading platform with current data (not CMCmarkets)

Hey, Hotcopperers

I've been trading some US stocks and I've been unhappy with the CMC markets platform. In particular the data is very slow and often 15 minutes behind which isn't very useful. I often get much quicker quotes from Marketwatch or the CMC markets CFD platform but the stock trading platforms suffer the same data lag.Can anyone recommend a service that's competitively priced but faster and more reliable than CMC markets.

Thanks in advance.