I was wondering if there is a difference in sound quality between different digital recorders such as Zoom H4n, Roland R-05 and Tascam DR-40 when a boom mic is used instead of the mic on the recorder? I've been trying to find the comparisons for the digital recorders mentioned before on the internet but all I could find was just the ones tested on the onboard mic. I will to use the recorder on my film set with my boom mic by the way. I understand that every recorder is different but all I know is they're different in functions but in terms of quality? Someone please enlighten me