I was just listening to my system in its present incarnation tonight, Some Aja and Coltrane, started out with my 225i and switched to the 325i and I was just marveling at how tremendously good it sounded, absolutely incredible. This is by far the best stereo system I have ever had, and the whole thing cost less than $1k. If anything else I think Grado gives outstanding value, show me another $300 retail phone that comes close to the 325i, it will be a very short list.
The 325's can really sound amazing with the right gear/recordings, I particularly like the thick vocals and guitar with this model, the miss can be very powerful at times in a great way.