C++ vs Delphi Programming

I have a colleague who insists in developing programs in Delphi. My concern is that I have known C/C++ and regard these languages as the safer languages to use in development, due to their stability and performance. But I want to know from others what their view point is on Delphi programming – compared to other languages.

what difference have you found in developing software systems in Delphi as opposed to C/ C++. What are the compatibility and scalability issues? Is it a viable development programming language or are the others better?