I hope this isn't too dumb a question. Does the type of compiler you use affect the umm.. end product? Such a speed and the like. When I learned C/C++ we were using TurboC in DOS. I'm just now returning to C++ and I find VC difficult to use, but BCB much easier for designing in Windows. Will the end result be different? It's for high frequency (1000+ executions daily), multiple strategy automation. I'm using another language now (VB) but I feel like it gets bogged up at times and lags. Sometimes as the day goes on and especially when volume increase a lot. And I plan to expand with more strategies in the future so I presume C++ may help relieve my problems as I can't see how I can possibly make my VB code more efficient. My guess is that it doesn't make a difference but I never read about people using BCB and wondering why since it's so easy to use.