Hello,
 
Currently I cannot decide which headphones should I get. I have done extensive research, and these are the headphones that I have come up with. They all seem good and each one offers advantages over the other, but I am wondering which is the best of these models?
 
Audio-Technica ATH-M30                $42.40
Audio-Technica ATH-M40FS           $49.00
JVC HARX900                                 $55.24
Superlux HD 681                              $30.90
Samson SR850                                $49.99
RHA SA950i                                     $39.95
Noontec Zoro                                   $42.97
 
 
What is most important for me is the sound quality that these will produce. Any help or insights would be greatly appreciated as I am stuck and cannot decide between them. Thank you!

JVC HA-S500 are very good headphones that fit your budget, too.

also consider Panasonic htf-600

Forget the old HD681 and check out the EVO version or the HD661.
Takstar HD2000 and its clones are also good alternatives.

After much thought, I decided to go with the Noontec Zoro as I will be powering them using a laptop, and 16 ohms seems like the best bet for such a purpose. Also i read that they deliver a good enough sound quality. Anyway, thanks for all your suggestions...