When you're on the subway the lower frequencies are the first to be drowned by outside noise, so then you will need to EQ bass up. In the ES10, that's already already taken care of.
You could get something that isolates better, but I don't want to be completely isolated. I want to be able to hear when there's an announcement so that I can remove my headphones.
Very good points, i notice this with the es10. Very enjoyable in the outside and the bass is still there in noisy environments. At first the heavy bass bugged me. I compared it to the esw9 and it actually sounds a lot like them only with elevated bass. With that bass as a floor the treble fits in well with it actually. I have some Ed8's when i want to up the level and detail a bit but they are more cumbersome. The es10 works very well for a portable for me and i am glad that i gave up waiting for the new Senn release and just got these instead for about the same price. Seems a step up from the 1350 and HD-25s and updated Amperiors.
Of course there are always those who would argue, this is head-fi where they even argue that HD800 sound good out of an ipod when you suggest a decent amp.