I'm interested in buying ANR headsets for my RV-12. I have been using David Clark H10-30 passive headsets for nearly 600 hours and thought that upgrading to ANR headsets might add a little extra comfort in the RV12. I was planning on buying the DC one X that David Clark offers, but then there is all of the hype from Bose about their new A30. In doing a bit more research, it seems that Rotax powered aircraft don't get along that well with ANR headsets due to the higher frequencies generated by these high RPM engines. Spending $1200 each has given me pause. Hopefully I can get some ANR users thoughts before making a huge investment. I appreciate any feedback. Thanks.......Tom