Hello Everyone, I've been browsing through the forums for a bit, and I have caught a recurring trend of people being recommended either the M50s or 880s as a quality entry headphone. I looked up some more reviews this morning.. but really can't find enough information (other than a bunch of people praising both sets) to make a definitive decision. I've noticed that the M50s have an impedance of 38 ohms vs the 880s having 3 options, 32, 250 & 600ohms. Also noted that most people recommend the 600ohms 880's vs. the 250 or 32ohms. Which headphones would you recommend of the two? Would I need an external amp to run either of these headphones properly? And what advantages/disadvantages are there to the 600ohms vs 32ohms?