I found them to have great speed of delivery and clean transients everywhere except the sub-bass range. What headphones do you have that were superior? I'd love to check them out.

Do you call this a review... You may sacrifice some effort to make it a helpful one...

Sorry, I updated the review. And sorry for my english if its bad.

At first glance when compared to the GRADO, It seemed to be lacking speed, But as I grew more accustomed to it it seems I was incorrect.  It was the treble response somewhere around 2k-4k that was boosted on the SR 325is that made it seem faster.