Quote from cstfx:
Hands down, IB. While the spreads will widen, as they would on any other ECN, they are very temporary and above all, the platform doesn't lock you out. The problem with Oanda, from my experience, is that their system will lock you out around news times, for up to an hour. Most news events effect is for, what, 5 minutes. So why do they have to lock the system for an hour? It's because they can't handle it. Question for you: is this the type of firm you want to leave your money with? Remember, Oanda is not regulated and does not give you any insurance protection in case they implode (Refco anyone?) but an IB Universal account is insured for 30MM.
Except for the crosses, there really is not comparison - I would never leave my money with them again!
If you are serious about being a profitable fx news trader, then you shouldn't be with any MM's, but with ECNs. It has been shouted on these pages over and over again. Why do people still want these bucket shops? Is it the $500 dollar deposit? But don't just take my word for it - go ahead, open your mini account and good luck.