I replaced it with an MT-09, to go alongside my S1000RR, which I can barely afford to to insure now. The MT is just about all I could afford after the insurance losses. Great bike also, but very different. Superb motor, low quality suspension. More suitable for squeezing through traffic, but nowhere near as good for touring. I do miss the build quality of the Katoom.
Noise-wise the Reevu is somewhere in between. Every Arai I've had has been noisy. I did have a Shoei, it was very quiet, but unfortunately I have an Arai shaped head. The inside is very nice.
Mirror works fantastically well once you get used to angling your head. I think it's much safer than mirrors as you can angle your head slightly to the side and flick your eyes up for an instant lifesaver. Very useful in traffic when you need a lifesaver but don't want to turn your head away. I do still find myself using lifesavers in less risky situations though- no bad thing, and pretty hard to drill out
No mirrors makes filtering much more fun!