I bought these to replace a a pair of R(s?)130 headphones, attracted by the new "Kleer" system, and first impressions are very good. Very easy to set up straight out of the box. The sound quality is the best I've ever had from headphones, wired or otherwise, and it's noticeably more crisp and full compared with the 130s, and they're lighter too. Comfortable to wear and will go very loud if that's what you want.
I'd seen reports that they can interfere with wireless networks so I was concerned, but I have a PC within a few feet and a laptop in the same room that have been unaffected. The router (Netgear) is in the room next door though.
Now for the downside: they are open ear so you can hear outside noise, including the TV sound if it is on, and because the Kleer system introduces a tiny delay in the signal it sounds as if there is an echo which makes them unusable with the TV sound on. Not a problem for me as I am using them mostly to watch/listen without disturbing others late at night, but this may be a factor you need to consider. The delay is so short that there is no noticeable problem with lip synchronization on dialogue when watching TV.
Also, the switches for on/off and volume are very small and a bit fiddly but this is only a minor criticism.
They are expensive so I was expecting good quality and I think they deliver - one star deducted for the fiddly controls/echo.