For clarity, I did not suggest or suspect poster John Merchant of being a shill. Just the opposite: I guessed that his reply may mean that he viewed the series of prior posts as scripted promo for FX dealers.
Agreed: if you can, trade the futures (CME products on Globex, for example). Volume is way up, i.e., liquidity improved, just from this time last year, and you get a fair shake. Contrast trading with FX dealers, which is like betting with a bookie and letting the bookie pick the final score. Kinda foolish. I know. I tried it.
If futures are beyond your reach, I can only suggest you check out USA-based dealers who are licensed as futures commission merchants and members of the National Futures Association (NFA). Spot (or margin) FX positions are not futures, so futures regulation does not help you per se. But it's certainly better than no regulation. Plus, as I understand it, the NFA has member requirements which, assuming they are enforced, would prevent or punish the manipulation and bucket practices you might encounter from FX dealers not subject to the same requirements. Continue to ask around. Other board members know a good deal about the subject.