well, after a couple weeks with the SRH1840, i can now give my endorsement.
it's a really great headphone.
not earth-shattering, but very capable, especially for the price.
in some ways (not all) it hangs with the T1s and whatnot.
in other ways, it has a few shortcomings.
but, on the whole, it is a really likable headphone.
right now, being used in my work rig, it is a very satisfying listening experience.
sometimes you just hear a setup, and you're afraid to change anything or upset the balance.
well, the SRH1840 has had the distinction of making me feel that way today.
here's the rig i'm using it in:
J River Media Center > Hiface EVO w/ battery > Wyred4Sound DAC2 > Apex Peak/Volcano > SRH1840