[matt789]

ok their both around the same price witch one would be better for techno/dance/electronic music?

 

[R-Audiohead]

I have extensive experience with the HD 448, and none with the other can.
 
I can provide you with my review of the HD 448 here.
 
While I think the mids in this can are very nice for the price... I think the presentation might be a bit too dark for electronic and the bass might be a little too lazy for techno.  Both of those genres require fast/responsive drivers and the HD448 isn't exactly quick.  I still feel comfortable saying it is one, if not the best option for headphones 100 and lower.

 

[R-Audiohead]

If you could expand your budget just a bit more, techno and electronic would sound brilliant with a set of 45 dollar MB Quart QP220s from here and maybe an inexpensive amp to drive the 100 ohms like a FiiO e7.
 
This is an open headphone, keep that in mind-- the QP220 will NOT isolate.  The HD 448 are quite closed and isolate well.