isnt that something like “How can I find a good girl to get marred to” 
, its not that easy, based on my experience. There is a thread on this forum dedicated to offshore brokers who have been vetted over last 5 years. If you are just starting off, or if you are sick of client support and commissions and leverage limitations from your current broker, its best to try and move on to an ofshore broker. Given CFTC and ESMA more and more brokers will limit how much leverage you can take, how your trades are accounted (FIFO or LIFO or Average or trader’s selected). Plus weather you can hedge your positions or not or weather you can avail serious leverage like 200X or more. In my experience offshore brokers are the best way forward and they will re-define the forex brokerage indsutry in the coming years. You can see the list of these brokers here
Hope that helps