What are the best and out of these what is the best wireless headphone system?

I am in the process of getting a pair of wireless headphones, and have, so far, short listed Sennheiser Rs 180, TDK WR 700, AKG K 912. Would like to know leads to reviews and any one’s experience with these plus other makes such as Sony, Panasonic and Pioneer. Not interested in any line of vision technology such as IR. Thanks.