Title says it. If you do please answer these questions. Are you Based in US? What broker do you go though? Minimum account size? Spreads? Liquidity on orders over 10MM? How well do they mimic actual EBS quotes? (this is why I asked spreads) If you use them your spreads should be 1 on euro, 2 on yen, 2 on pound, 2 on franc from london through 1 pm nyc time. (Standard mimimum size on EBS is 1MM.) If they aren't, then the are increasing the spread. FCStone and Aarontrade offer Currenex, FCstone offers EBS. FCstone is a solid company, Aarontrade is backed by Archer Daniels Midlan-they are huge. Anyone with either of these?