[whirlwind]

What is the best that I can do for $100
 
HiFiMan RE400
 
Shure 215
 
Is there anything else that I should be considering at this price range ?
 
Are both of the above a nice upgrade from JVC HA FX40

 

[NA Blur]

My new favorite can in that price range is the Philips Cityscape Downtown.  They sound as good as they measure and personally I think they are my go to headphone now period.  I find myself listening to them more often than my Denon AH-D2000.