I'm trying to learn to read into headphone graphs as I'm in the market for a new headphone (portable or full size) and I don't have a means of listening to a possible candidate nearby.
I just made a comparison between the 3 headphones I own (D1001, D5000, HD25-1 II) with the song from The Knife: Heartbeats through my Fiio E7 (will be replaced, I just ordered an EHP-O2).
Also, I made this headphone graph:
I like my HD25 best. I don't know the right words to describe it, but it is to me the most engaging headphone. According to the graph, the D5000 should give more bass. But to me everything is more forward/upfront on the HD25, clearly so. Is this because of the smaller soundstage or something else?
Possible candidates I'm looking into (but not exclusively, any other suggestion is appreciated):
-Sennheiser HD650 (most interested, as I like what I read about them and also judging from this graph would be a good upgrade)
-Grado SR225 or other
-Beyerdynamic DT990 / Ultrasone Pro 900 or 2900
So, it would be nice if somebody can explain to me why I like this 'forwardness' of sound from the HD25 the best and can suggest other headphones (preferably a step forward).