Interactive brokers seem to be the best algo trading house for retail traders, getting answers out of them is difficult, customer service is non existant
trader dealer brokers might be a place to make enquries as well
there are plenty of MT4 platform brokers out there as well
The way I figure, once I have a system that works the broker part of the equation wont be as big an issue
trading GSL positions on CFDS i think maybe GFT offers that on MT4 FX trading only