Outright detail, the SR80 and the HD25 beats the V700. Like the DT250-80, the V700 loses some top end information. This does mean that the V700 is less fatiguing to listen to for longer periods and generally sounds smoother. The thing that prevents longer period listens on the V700 are the earpads but I've already changed mine. The V700 minus the pads and the felt still exhibits some flab, but not a debilitating amount over the HD25 and the SR80.
The ease of driverbility (sic... very sic) is really what sets apart the V700 from anything else. It's especially relevant in Europe when you consider the mandate that anything which ships with headphones is not allowed to exceed 100db with the shipped headphones. The V700 is one of the few full size phones which can be expected to be as or more efficient than the supplied headphones.
Out of the (Europe limited) iPod, the V700 is very enjoyable and gives fidelity more than sufficient for portable use. Out of the (limited, but to a more severe level) D-EJ2000, it is one of the few full size phones which gives me anything approaching decent dynamics.
As portable headphones of choice for me, nothing has yet beaten the Sennheiser PXC250 and the V700 does not go anywhere towards dethroning the Senn. But it is an interesting flavour to return to every now and again. I will be using the RP-FT30 body for the Grato transplant and not the V700.
Next will be a direct head-to-head between the SR80, HD25 and the V700 on my 'high-end' set-up, that is the SCD-XA777ES and modded WAD amp. I'll also detail the comparisons later in a separate post.