So far I had the Beyerdynamic Custom Studio with Beyer's Headset Gear (both discontinued), DT 880 Pro Black and DT 900 Pro X (current) and I can only recommend the new Pro X series as you can use them without an amp. If your budget is tight and you don't wanna buy an extra mic, I would go MMX 100/150 and replace the leather pads for velour. The headset mics from Beyerdynamic are also good -> Keep in mind that if you buy the Aria there is no mic. It might be less expensive to buy headphones and a cheap USB mic sometimes.