So, you have two other systems that the boards work on, and you're still blaming the Arduino?
I would think you have learned a little bit of troubleshooting theory haven't you?
If your expectation that a prototyping system is going to work every time, all the time, then I don't think any platform is going to satisfy you. (Which of course now is the part where you say: "But my pic NEVER gave me any problems.")