zero7525 is right - I don't have the SR225s any more so can't compare them directly any more.
Listening to my HF-1s (SR225 drivers in wooden cups) to orchestral music straight out a Lavry DA11, the soundstage of the Grados and the Shures have a very different character. I'll grant that the SRH840s have a bit better imaging, where I can place individual instruments a little better. And instruments sound like they are further away, but strangely, a bit echoed and enclosed in a room. Probably because they are closed headphones. The HF-1 sound like the first violin is, um, me (I used to play violin) and have a much more 'airy' sound without any sense of walls or spatial limit. So I'll meet you halfway, and say that the Shures have a more clear, but bounded sense of space, where the Grados have a more spatially open feeling. As much as I love the Shures (rated them higher than all the others), that closed and bounded feeling is my main quibble.