Metatrader platform difficulties

In the last 3 days I was busy debugging the MBTrading robot application. I had a problem related to closing the trades, and I am still in touch with their support team. Except that, the robot is ready.

I noticed a problem related to back test with Metatrader platforms - The Metatrader platform from Metaquotes is very fast, and very comfort to back test, unlike the Alpari platform. I compared them and Alpari is much slower. The second problem is that Alpari has different performance with the same data.

I need a signal supplier which is reliable, and it's platform will be able to conduct my optimizations rapidly. I am examining different brokers in order to find a good signal supplier for my robot.