Well, i just bought the HD428.
I had the chance to try the HD428 and the HD438 for a couple of song styles(new, without "burn-in" and equalization, just out of the box default).
Conclusion:
The HD428 seems to have a good bass and pretty good mids and highs.
The HD438 has a better overall sound, a little more clear in highs, but not so powerful on bass.
And the HD428 is far more beautiful, has a bigger cable an is cheaper, so...
Now, I belive that with time, the "soundstage" will open and the quality will improve. But it's enough for what I need.
I have a question: When i connect the phones to the PC speakers (Logitech X-230) or directly to the on board sound card, the volume is not very high (just like my old HD202's). I know that the Realtek drivers suck...
Is there a cheap amp that allows me to have a louder sound on the PC (without losing quality)? Not anything too fancy, just a simple improvement.
Thanks!