I am considering a move away from eSignal after a good few years. I am currently executing through IB. I have read consistently good reviews for NinjaTrader and Zen-Fire. I don't mind a little C# programming either. IB doesn't offer NT alongside ZF. I know of several brokers that offer NT with ZF, but they all seem to be the '$500 margin for day trading' crowd, something I'd like to stay well away from. Is there any broker that compares favourably with IB (conservative, capitalised, fast and competitive) but offer ZF with NT? Thanks. PS. I only trade ES.