A couple of headphone needs,


I have had good success with feedback from other AudiogoN users, so I am asking:  What have you enjoyed in a pair of inexpensive headphones.  I asked this before, but have yet to purchase and now have an expanded need, both I am my youngest son are in need of a pair.  For my son it is his main system and for me it is my bedroom/2nd system...and both are the Nakamichi SoundSpace 5.   I have not had any headphone experience for many years.  In the past it has been those green Koss 4a?,  Audio Technica electret condenser.  Also had used some others in the past but nothing in years.  For both my son and I they would be used mainly for late night listening.  Thanks for your thoughts. 

whatjd
I love my Drop/HIFIman HE4xx's that I got from Drop.com for $160. They have good detail, soundstage and nice fast bass and mids with smooth highs.
Another HIFIMAN fan here.  Not sure what kind of sound you prefer, but if “out-of-the-head,” open spatial imaging sounds attractive I’d recommend the HE400S, which is also easy enough to drive that it’ll work using a cellphone but good enough that it’ll scale with a better amp/DAC.  A good deal can be had on Amazon by choosing the “Like New” option sold by Gramophone for $160, which is what I did trusting their highly favorable reviews, and they’re great — truly like new at a good discount.  If you prefer a little more intimate and tonally richer experience then the Sennheiser HD6XX would probably be a great option — just depends what you’re looking for. Hope this helps, and best of luck. 
Thanks to all.  My two main sources for music are my own CD/SACD collection and two very good college/public radio stations.....mainly listen to classic Jazz from the 40s through the 70s and  female vocals.