Not sure what kind of mods you've done with your 80's, so obviously I
can't compare them to any other headphone.
Still, though, regarding the 225e's vs. the 325e's, I think that the 325e's
are somewhat better sounding. Smoother, more detailed, more convincing
bass, more dimensional. Also, the treble is a bit smoother than the 225e's.
I think they're a steal at $299.
And of course they're characteristic sound and build will not appeal to
everyone.
I had the 325e's for about two years; sold them a couple of months ago.
Listened to them often and enjoyed them very much. Actually considering
buying another set shortly.
Just bought a set of 225e's for walking around outside as they're less
obtrusive, being mostly black, and of course being fully open allows
for greater situational awareness. Again, I like the way they sound
very much and, while looking around, I couldn't seem to find any open
headphones which sounded better or even as good.