When you mean noticeably better, what do you mean? The sounds are the same not better or worse. My ear was getting sore from having the N7, plus I was having a hard time keeping the on the ear receiver on my ear which is smaller than most ears. I put the smaller ear clip on and that helped, but didn’t entirely solve the problem. I like the K2 off the ear processor. It’s comfortable as long as you don’t lay down with it because of the thickness.
I would have gotten the original Kanso, but I needed the bluetooth capabilities of the N7. I happened to fall into the 2nd processor exchange whennthe K2 came out in October in the US. I had my implant surgery in July. My cochlear mentor traded in her spare N7 for the K2. She was able to do this because she upgraded to the N7 in the same timeframe that I was implanted.