Have you tried Lightspeed? Depending where you are in the world you may or may not have heard of them. The company specialises mainly in ANR and seem to be alot cheaper than most ANR sets. I thought Id mention it to you cos Ive read a few good reviews on them.
Search the internet for their website and reviews. One of the distributors is at...
www.webwings.co.nz/lightspeed
All the best.