I wouldn't really consider the HD25 (presuming it's the 25-1 with the single-sided cable) 'stationary phones'. For me they work really well as portables but their sound quality is IMO not fantastic if you take what else they offer (superior isolation, excellent efficiency, light weight, high durability and compact build) out of the equation. I like them for a balance of all the abovementioned attributes but the absolute sound quality that they offer is not that hot.
Seeing as they'll be well-driven by the Aria, I'll throw in a recommendation for the Sennheiser HD650. I find them pretty agreeable phones on the whole, offering much more sonic capability than an equivalently-priced (even in USD) Grado. Their unaggressive yet capable nature doesn't grate on me as much as the Grat/dos do for long-term listening. Grados have instant "first-listen" appeal due to their upfront sound, but long-term living / comparing reveals many inadequacies. I understand their appeal and it's a simple one... it more or less boils down to: drivers closer to ear = more dynamic sound. (Former RS-1/RS-2/325/80/60 owner)
The HD650 probably wouldn't be the first thing that the forum browser who considers hard rock would bring up, but the fact is that they do everything pretty well, and more importantly they allow long-term listening without unnecessary fatigue. Once they bed in, it's a headphone you can plonk on your head for hours... something I couldn't say for even the RS-1. The seemingly slight difference between the 'accountant-boring' HD600 and and bassier HD650 does make the latter far more of a musical omnivore, and does actually acquit itself pretty well in all genres.
I do listen to a fair amount of rock but I'd say more electronica and jazz, and my home office PC headphone is the Sennheiser Orpheus which I find decent for the application... but I somehow doubt you'd want to go that far