Be careful with this guys. I am a Moderator on a huge fta site, so know well the ins and outs with these fta receivers. nFusion were prosecuted and received a hefty fine from Dish Network. Others have set it up again but through a private server. We do not recommend to our members to use private servers, but I don't think those rules would apply here.
DN have traced and prosecuted some folk that use private servers.
The most reliable boxes would be either the Satzens or the Limesats. I think the LS are the ones for the future and they have 4 more new boxes coming out, one of which is very exciting news, the spec is very interesting, but I promised I would not disclose until the official release.
Dolphy is very expensive, I do not consider this fta. It is set up on a card sharing basis from the U.S. NAG3 which blocked all receivers, has been cracked but is not on open release in the US or Canada, it is underground there.
Your best be would bet to go with Delancer, he charges me US.$166 per year and I think his service is very good, I have over 300 channels on an unmarked box, which is fta, no card slot. I know how he and Dolphy are doing it, but I gave my word I would not disclose the info. They know what I do on the fta site.
The future for fta is "Latinoland". DN know what is happening there and have tried to "get in" to those latino countries, but have been stopped by Carlos Slim, including here in the DR.
If you want further info on any fta receivers and the latest updates you can go to aaafta.com