Connecting VT12 rear speakers through wireless

[mi2k]

I would like to connect VT12 (yet to be purchased) rear speakers through some wireless adapter because it is too difficult to run wires to the rear of the room. Other pieces in the setup are an Onkyo receiver and a VTF2MK3.

I see Acoustic Research ARW20 and JBL WEM-1 as couple of options:
http://amzn.com/B0029LHVNW
http://amzn.com/B001GXQOUU
What specs should I pay attention to? Are there other possibilities?

[Pete_Hsu]

Can't say that I've tried those. You may want to ask around on the big audio forums for people who have used this and other similar devices.

Sincerely,