FXDD is finally getting their act together and getting registered properly in the USA. http://www.fxdd.com/en/notice/customer-compliance.html I had demo'd their Currenex a while back and they quoted me good starting rates (20/MM and tiering down from 250MM capping out at 12/MM @ 1B) which makes them more than competitive with IB (except for that insured Account thing tho). They might be worth taking a serious look now.
I was thinking about it but met them at the Expo and boy, what a bunch of assholes. Came across as bad used car salesmen. Also, since they are NFA'd, they are no longer part of Tradition, so their capital base is all theirs now - no parent to watch over them.
I used them a couple of years ago when they were an ib for FC Stone before Stone had issues. Overall good experience with the guys - commish was a little high compared to what most are charging now, but generally good experience. Don't know who they ib for now.