Law firm / negotiator wanted (Panama City)

I am looking for a law firm with expertise in Internet and business law to take over an ongoing negotiation case and remain my company's legal partners in the future.
High success rate in negotiations is a must.
Willingness to take responsibility if they make a mistake is also a must.
Fluent English is also a must.

I appreciate any contacts, but please try to provide me with information about those who you know to match the above requirements.
Any negotiator alternatives are welcome as well.