Been looking around the net and notice there AKG K601 & K701 reference and K601 & K701 Studio. What is the difference between the studio and reference? Which is better the K601 or the K701? Also how much bigger is the K601 and K602 vs the K142? And is it worth it getting the K142 vs the other...

I been reading about them and they seem like they might be the best headphones for me(if I get them re-cabled to something better) and I want to know what the average street value for these be?

Howdy? I am looking to purchase some headphones that have a neutral sound or as close as you can get. I am not sure what will give me this, but I currently have a set of Sony EX forget the model number and they are pretty nice, and some sennheiser hd435, which are also nice but I want something...