i only have a couple hours on the new rs1's so i won't say much, other than there is quite a big difference in sound from them to the sr80, more than i thought there may be
what i can say with easy confidence, is even with a short time using them i can tell that these are almost exactly what i was hoping they would be. and they're super comfy thanks to the not-flat pads (these are the bowls, right?), more of an over-ear fit than on-ear. oh, and they look fantastic!
The longer you listen to them, the more you are going to like them and come to appreciate the sound.
It took me quite some time to really be able to appreciate just how good of headphone that these are.