There was a thread that were individuals claimed that Alpari frozen their account and held their cash after being profitable something with wrong prices.

I'd say stay away from Alpari, I'm with Oanda for about an year and I can not remember last time when I had a desconectd , I'm trading with their Java platform.

Mb seems OK too. . I didn't heard bad things about them but I believe that their are smaller compared to Oanda because I din't saw afterward in that quarterly accounts profitability launch.