Both companies are legit. They have ported many many games. If you have not even googled them and looked into their portfolios then you are not serious anyway.
Of course a porting company needs your project files, since they are mapping the ACEs to c++ code. Also needs to tweak something from time to time. If you are not willing to share, then you need to publish yourself, to web and desktop.
The way you are writing your messages... If I were a publisher I would not make any deals with you.